Section 72 (first updated 4.28.2021)

Symmetry

Change Having No Physical Difference

See Feynman — 2:50:00[^1]

In quantum mechanics, there is a deep connection between the symmetry of physical laws and conservation laws. The question is: how can there be motion while still maintaining a constant form? This answers, on a deeper level, how an object with a constant form can move in a completely independent way. For example, my body is running, but running is an independent motion that the body is doing. The body maintains its identity while undergoing a change in its state and position.

Symmetry of physical laws means that when the situation is changed, it does not make any physical difference. You do something to the situation that has no physical difference. For example, rotating a diamond can keep it looking as though it is still, other than the lights reflecting off it, which indicates that it is rotating. The object changes its position while maintaining the same recognizable form. The change occurs without destroying the identity of the thing that changes.

This introduces a deeper question: what is it about an object that allows it to remain itself through change? If the object is constantly undergoing different states, then what allows us to call all of those states the same object? The object appears to possess a continuity that is not identical to any one of its particular moments.

Rotating crystals are very interesting objects in physics, and there is an entire field devoted to studying the behaviour of crystals because they characterize a fundamental dynamic of the motion of symmetry. The external motion of a rotating diamond is counteracted by the interior. While one side moves one way, the other appears to move in the opposite way. The form therefore contains within itself a relation between different motions. The movement of one part can be understood only in relation to the movement of the whole.

The physical property of a crystal demonstrates the discreteness of events happening as a continuous duration of time. When we perceive a moment happening here and now, we witness a continuity of the same scene, disclosing a set of independently acting variables sharing the same location. For example, a man walking down the street is seen concurrently with a bird flying, across from a building standing, etc. We do not ordinarily experience these things as isolated events. They are given together as one continuous scene.

But when the scene is changed for perception, and now a different scene is directly perceived as disclosing a set of independently acting variables, we can only reflect back at the previous scene as a discontinuity of different moments rather than different objects at the same moment. The previous scene is no longer immediately present. It has become something that must be recalled.

During a spatial extension, we see a set of discrete variables acting independently but forming the same duration. But from a purely temporal extension, when the scene is not directly perceived here and now, memory of it can only derive these objects as different moments. The object is not there present for the mind, so it can only recall a moment of that object.

When directly perceived, a man is a moving and living whole, going about different actions. But memory of that man can only recall a moment when he was sitting, or standing, or laughing, or crying, etc. The living continuity of the man is therefore transformed by memory into a series of particular states.

The reality is that the function of the brain puts a set of discrete events together at the present moment because, at the present moment, there is the immediacy to interact with things. But during a past moment, when the mind is reflecting on things, it does not hold the same continuity between events but sees them as purely discrete moments. For example, the same dog and man that were once together, alive and doing a multitude of actions, appear in the mind as a moment of a particular action.

The question, then, is how spatial extension is related to the temporal order of moments in time. This constitutes a difficult dynamic concerning how an object moves while maintaining a static form. How can something be continuously changing while remaining identifiable as the same thing?

This phenomenon of “mirroring” captures the same object at a different angle and therefore at a different moment. The mind evolved to filter out these moments into an integrated, self-identical object in motion. What is experienced as a single object may therefore be understood as a continuity formed from many different appearances of that object.

When we apply this same concept of time to spatial extension, or rather, when we adopt time and space as the same continuum to which this concept of “mirroring” is applied, we begin to understand the process of magnification. A change in scale can reveal distinctions that were already contained within the form but were not previously visible. The whole can therefore disclose its internal multiplicity when viewed through a different relation of space and time.

What a thing is not is its limit.[^2]

The way the conception remains identical as distinct from the objects of its experience takes the form of maintaining itself as a particle moving through a wave, or rather, a particle is the identity in a changing wavelength. A particle remains identical while a wave moves through it. The conception is indifferent in quality in relation to a set of events occurring to it while enduring through them.

The basic form of a particle is the spherical void which a shape forms around as the object of its character. The particle is therefore not simply an isolated point but a way in which a form can be conceived as maintaining itself through a field of possible relations.

Our deep acquaintance with classical mechanics makes us think that a particle is a moving object through a wave, like an aircraft through the sky. At a quantum level, locomotion, however, must itself be considered as a discrete possibility generated into being as a dynamical quality of a thing.

In string theory, a particle characterizes a possibility from a string. The particle is therefore not necessarily understood as a little classical object moving through an already existing space. Rather, the particle can be understood through the possible modes of a more fundamental structure.[^3]

A particle functions as a pure conception of a reality from a set of possibilities. A particle mediates the duration of a wave. A particle is a character, a personality in an experience. It is the identity that appears through the changing conditions of an experience.

In this way, the particle as a discrete measure becomes extended as a wave of potential discrete possibilities of itself. The experience, from the point of view of one reality, is the transition to the other. It is the same with being in the position of one moving to the other. The identity is not destroyed by the transition; rather, the transition becomes the way in which the identity is expressed through different possibilities. [see below DNA.]

What we see in the famous double-slit experiment is the fact that, through the particle, a wave changes its potential state. One wave becomes many waves. All of its potentials come out. The experiment therefore gives us a way of thinking about how one apparently discrete event can disclose a multiplicity of potential outcomes depending upon the structure through which it passes.[^4]

The slots are akin to particle-like states, and the wave passing through them is determined into potentially different changes. This means that the particle-like state determines the course of the wavelength. The structure through which something passes determines which of its potential relations can become manifest.

We see this exact same process in the phenomenon of white light moving through a prism.

When light passes through a prism, the light bends, and the different colours that make up the white light become separated into the differing colours of a rainbow. This means that the potential states of a white light become discrete and revealed when the structure of a prism takes it on as a duration. One actual form is dissected into its many possibilities.

The white light appears as one unity, but within the unity there are different potential colours. The prism does not simply create the colours from nothing; it reveals distinctions that were contained within the light but were not separately perceived in the original form. The one becomes many through its relation to another structure.

In this sense, actuality determines potentiality. The actual form is the condition through which the potential forms become revealed. Aristotle writes, in the context of generation, “man begets man”; the offspring are the potential of the parents.[^5] The parent is therefore not merely a present actuality but contains a relation to what can become actual.

The same conceptual movement can be applied to the particle and the wave. The particle is the discrete identity, while the wave is the extension of its possible states. The particle maintains a character while the wave expresses the possibilities of that character through duration.

Thus, symmetry becomes a way of understanding change without the destruction of identity. Change does not necessarily mean that a thing ceases to be what it is. Instead, change can disclose what the thing is through the different possibilities that belong to it.

The deeper problem is therefore not simply how an object moves, but how an identity can persist through movement. A thing remains itself not because nothing happens to it, but because the different happenings can belong to the same continuous form. The identity is the continuity through the changes.

The particle, in this sense, becomes the discrete expression of an identity, while the wave becomes the continuity of its possible transformations. What appears as motion is therefore not merely an object travelling from one place to another. Motion is the manifestation of the possibilities contained within an identity as it passes through a changing relation.

Symmetry is therefore not simply the absence of change. It is the preservation of what remains the same through change.

Footnotes

[^1]: Feynman reference to be inserted at approximately 2:50:00, as indicated in the original notes. The exact lecture/source should be identified if this is intended as a formal citation.

[^2]: This phrase is associated with the dialectical treatment of determination, negation, and limit in Hegel’s philosophy. The parenthetical note “phen of spirit” in the original appears to refer to Hegel’s Phenomenology of Spirit, although the wording should be checked against the intended passage.

[^3]: In modern string theory, particle types are associated with different excitation modes of strings. The philosophical interpretation here—that a particle “characterizes a possibility from a string”—is an interpretation of that physical idea rather than standard physics terminology.

[^4]: The double-slit experiment demonstrates quantum interference. More precisely, quantum mechanics describes amplitudes associated with possible paths, and the resulting interference pattern changes depending on the experimental setup and whether which-path information is available. The phrase “one wave becomes many waves” is retained here as our philosophical formulation.

[^5]: Aristotle uses the formula “man begets man” in Physics II.2 in discussing natural generation and the relation between actuality and potentiality. The formulation here connects Aristotle’s biological example to our broader argument about actuality and potentiality.

DNA and Information

DNA, in the onset, appears to be what we define as our “genetic information,” which is an interesting definition of the most basic, fundamental explanation of our material data as something that is ultimately informational, or abstract, as we say, rational and conceptual. This means that the basic essence of our material structures is something that we can only describe as codes, signals, or, ontologically, as “relations.”[^1]

These realities take on physical properties, and we assume them to be a certain physical figure. Yet, for different observers, they can appear as different angles of the same underlying substance. What the actual form of this substance takes physically, however, is an independent subject matter and a different question from what we observe ourselves to be at the macroscopic level.

For example, what I see as a man—say, his name is John, and he is this and that particular thing—is not the same as the genetic information that makes him up, other than the fact that this information is within him, disclosed within him, such as to constitute his structure in space and reality. The genetic information is therefore not identical to John as he appears to perception, but it is nevertheless one of the underlying structures through which John becomes physically constituted.

It is almost the case that the dimension of his cellular structure is of a completely different dimensional scale from where he is standing as an object of perception: John as a certain object, felt and experienced. By this I mean that, through him, or because he is such the outline of a particular area operating in spacetime, he—or any particular object of perception—is itself transparent.

Through him, you can use the object as an entrance way to access different magnitudes of dimensions. Although these dimensions may be revealed through magnification from these macroscopic objects, they share no other true relations than being inside them. They are independent dimensions of different scales in reality.

That reality, or the scale of which, is a big dilemma for the true question of man. Man is a reflection, or, through him, is reflected an entrance to a different dimension of reality. The person that appears to us at the macroscopic level can therefore be understood as an entrance into structures that are not immediately visible at that level.

This dimension exists as his information, or, in other words, it is a position in spacetime—say, four-dimensional, or more, or whatever higher-dimensional structure it may be—where all real moments are instantaneously and simultaneously occurring all at once.[^2]

What will happen to him and what has happened are interplayed in this field and are objectified as moments of his information. His physical features are secondary to these possibilities and moments in time. They are their characterizations, their characteristics, their details, per se.

The physical person, therefore, can be thought of as the visible characterization of a deeper informational structure. What appears to perception as a single object is, upon further examination, composed of layers of organization operating at radically different scales. The body is simultaneously a macroscopic object, a cellular organization, a molecular structure, and an informational system.

The question then becomes whether these different descriptions are merely different ways of looking at the same reality, or whether they represent genuinely different dimensions of reality. If DNA can be described as information, then the physical body appears to contain within itself something that is not adequately described merely by its physical appearance. The body becomes the manifestation of relations, codes, signals, and possibilities.

This gives another meaning to the idea of information. Information is not necessarily a physical object sitting somewhere inside the body like another piece of matter. Rather, it describes an organization of relations that can be physically instantiated. DNA is physical, but the sequence and organization of its nucleotides can also be described informationally. The same physical molecule can therefore be approached through different conceptual descriptions: as matter, as chemical structure, as biological information, or as a relation between possible states.[^3]

The distinction between these descriptions becomes important when we consider the relationship between the microscopic and macroscopic scales. John, as perceived, is not simply equivalent to the sequence of his DNA. His identity as a person emerges through an enormous organization of biological, psychological, temporal, and social relations. Nevertheless, his genetic information participates in the constitution of the physical structure through which that identity becomes manifest.

Thus, the macroscopic object can become an entrance into the microscopic. The body can be magnified, and through magnification the apparent simplicity of the person gives way to an enormous multiplicity of structures. What appears to be one thing at one scale becomes many things at another.

The same movement can be imagined temporally. The person standing before us appears as one continuous object in the present. Yet that present contains a history of previous states and a range of possible future states. The person we perceive is therefore not exhausted by the single moment in which we perceive him.

John standing in front of us is one actuality. But within that actuality are relations to what he was, what he can become, and the biological information through which his body is continuously maintained. The present object is therefore connected to a field of possibilities.

This brings us back to the question of dimensions. If spacetime is treated as a four-dimensional continuum, then the person is not merely a body located at one instantaneous point. He has a temporal extension as well as a spatial extension. His existence can therefore be conceived as extending across a series of moments, with each moment constituting a different state of the same individual.[^4]

From this perspective, what we call “John” is not simply one moment but the continuity that relates his moments to one another. The man who is standing, the man who was sitting, the man who was a child, and the man who may become an old man are different temporal states of what we identify as the same person.

The deeper question is whether these moments should be understood as independently existing states or as aspects of one continuous reality. If we imagine spacetime as a whole, then what we experience sequentially may be represented as different locations within a larger four-dimensional structure. This is sometimes philosophically associated with the block universe interpretation of spacetime, although that interpretation is not itself established as the uniquely correct physical interpretation of relativity.[^5]

Under such a conception, what will happen to John and what has happened to John are not simply unrelated events. They are different locations within the temporal extension of his existence. His physical characteristics would then be particular characterizations of this larger structure.

His information, in this sense, would not simply mean the DNA sequence inside his cells. It would refer more broadly to the relations constituting his existence: the physical structure of his body, its position in spacetime, its history, its possible states, and the relations through which one state becomes another.

The physical features would then be the characterizations of these possibilities. They are the details through which the deeper structure becomes perceptible.

Man, therefore, becomes a kind of reflection of reality. Through the perception of one man, we are led from the macroscopic object to the cellular, from the cellular to the molecular, from the molecular to the informational, and from the informational to the question of spacetime itself.

The man is therefore not merely an object occupying space. He is an intersection of different scales of reality.

At one scale, he is John.

At another, he is an organism.

At another, he is a collection of cells.

At another, molecules.

At another, atoms and fields.

At another level, he can be described informationally—as an organization of relations and possibilities.

And at the level of spacetime, he can be represented as an extended history of states rather than merely the instantaneous image that perception gives us.

The problem is that none of these descriptions, by itself, necessarily exhausts what the object is. Each description discloses something different. The macroscopic person is not reducible, in any simple sense, to the visual image of the person, just as the genetic information is not identical to the macroscopic person. Yet these levels are not unrelated: they are connected through the organization of the physical reality itself.

This returns us to the original problem of identity through change. If the body is constantly changing at the cellular and molecular levels, while the person continues to appear as the same person, then identity cannot simply mean that every physical component remains identical. The identity must instead be understood through an organization that persists while its material states change.

The body maintains itself through change.

The person maintains an identity through changing states.

The genetic information participates in the organization of those states.

The macroscopic form gives us access to structures that exist at radically different scales.

And spacetime provides the larger framework within which these changing states can be related.

The question therefore becomes: what is the reality that remains identical through all of these transformations?

Perhaps what we call an object is not merely a thing, but a relation maintained through changing states. What appears as a stable physical object may be the visible expression of an underlying organization whose individual components are constantly changing.

In this sense, the identity of John is not simply one physical moment. John is the continuity through which many physical moments become related as the moments of one individual.

The object is therefore not merely what appears at one scale. It is the relation between the scales through which it can be disclosed.

The person becomes a doorway.

Through the person, the cellular is disclosed.

Through the cellular, the molecular is disclosed.

Through the molecular, the informational is disclosed.

Through information, the question of relation and possibility is disclosed.

And through relation and possibility, the question of spacetime itself becomes visible.

The object that initially appears to be the simplest thing—“a man standing there”—therefore becomes, under magnification, an immense structure of relations. The apparent simplicity of the object is not the absence of complexity. It is complexity held together in a form that perception recognizes as one.

Thus, the macroscopic object is simultaneously an actuality and an entrance into potentiality. What appears as one physical figure contains within it a multiplicity of structures, states, relations, and possibilities.

The man is therefore not merely standing in reality.

He is a position through which reality becomes disclosed.

Footnotes

[^1]: DNA is a physical molecule, and “genetic information” is a standard biological description of the sequence and functional organization encoded in DNA. Calling information “abstract,” “rational,” or “conceptual” is a philosophical interpretation rather than a claim of standard molecular biology.

[^2]: The idea that all moments exist “instantaneously and simultaneously all at once” is a philosophical interpretation, not a direct consequence of physics. Relativity represents events within spacetime, but different interpretations of what the mathematical structure means ontologically remain possible.

[^3]: DNA carries sequence information through the ordering of nucleotide bases. The information is physically instantiated in the molecular structure; it is not generally treated in biology as a nonphysical substance.

[^4]: In relativity, an event is specified by spatial and temporal coordinates, and an object’s history can be represented as a worldline through spacetime. The language of “temporal extension” here develops that physical idea philosophically.

[^5]: The “block universe” is a philosophical interpretation often associated with the spacetime picture of relativity. It treats past, present, and future events as parts of a four-dimensional spacetime structure. It should not be presented as an experimentally established proof that past and future exist in exactly the same sense as the present.

Decoherence

In connecting these ideas together, when we see them as separate, we see them as explanations of physical phenomena that do not necessarily connect, or whose connection is not obvious. But they are connected, as they are all part of the same aspect known as the “uni-verse.” There is a unification of these phenomena into a single substance. Substance here refers to the essence of matter, not just the phenomenon we observe as a universe, or a Being (organism), but we must connect them together.

The light cone we described as not just a surface in spacetime takes the figure of a cone in three dimensions, comprising all points from which a signal of light can reach a point (apex), that appears simultaneous to an observer. This idea is actually a phenomenon of light arising from the observer, or it is a necessary physical photon that presupposes the observer, because it ultimately states that in space, no matter where an object is intuited on spacetime, whether it is in the past, present, or future, it, from this distance, since light arrives to any point in space equally no matter the distance (nothing beats the speed of light), means that for the observer every point in space, and therefore in time, all exists simultaneously for the observer.[1]

But then how can we characterize them as past and future, as one has already happened and therefore no longer exists, and the other does not exist by virtue of not yet happening? And therefore the enigma in space travel, which is also called “time travel,” as the two are not distinguished necessarily in spacetime study: how can we go back in time and reach the past since it is no longer there? It has already happened, but this has already happened only from the position of space for that observer. For another, that light distance retains all the information from that other position, so that theoretically an observer from the future can access the past of another by manipulating the universe as information data. In light, all information of the universe is held and disclosed, reaching the speed of light can arrive at that moment. We still have not explained how this is possible or even how it would look like, but we ascertained the possibility as necessarily true due to this phenomenon of the light cone.[2]

We can go further and say these light packets that exist simultaneously for the observer take on a supersymmetrical position, meaning that they exist all from each other; from one appears the many. This is further elaborated by the reactions between fermions and bosons.

Quantum decoherence, basically, is a boson defined as having 0 spin. This means that it is static or eternal in motion; it does not change, while fermions have a half a spin. (Elaborate this section and show how light has no change, bosons and fermions having change or spin relate to each other to make time travel possible, going to the past.)[3]

The Higgs boson enters this question because the Higgs field is associated with the mechanism through which elementary particles acquire mass. The Higgs boson is therefore another phenomenon that appears distinct from the light cone, supersymmetry, fermions, and decoherence, but it can be placed within the same question concerning how apparently distinct physical phenomena are unified into a description of one universe.[4]

Motion as Conception—Zeno Paradox

What it means for motion to be conception in the sense of generation is explained exactly by how conception is rationality as function of consciousness. Ordinarily, the first question of motion is related to the cause of things: the first mover is self-motion. But as to what self-anything means is very ambiguous because we normally think that to move oneself means to have a sense of individuality moving in distinction from everything else.

However, in nature the opposite is true because self-motion is informed by other, or in other terms, the relation defines the self-identity. This is very obvious in the realm of natural sciences, especially physics, because any description of an object’s motion involves its relation with something else as its influencing cause.

Anything in nature is said to be in relation to something else, as this is the basis for relativity: that an object is distinctively in motion is identified by its relation as it comes into some kind of physical contact with another object, directly, like sharing the same substrate, or indirectly, like crossing by it. (Add here the limits of the term relativity.) Why do the salt pebbles move? Because of the waves of water.

Newton’s laws of motion describe primarily that natural motion is a set of relations. This means that in the sense of physics nothing moves independently from everything else, or, in other terms, nothing is independently moving.[5] However, if nothing is independently moving, then how is motion distinguishable, as it obviously is?

This is the same problem put forward by the Ancient Zeno paradox. Explain Achilles and the tortoise.[6]

The Zeno paradox is usually illustrated as: the quickest runner can never overtake the slowest, because the pursuer must first reach the point whence the pursued started, so that the slower must always hold a lead. Since the slower is always at a point ahead and both are at the same rate of motion, the point ahead of the faster is always moving simultaneously ahead. This means that, strictly speaking, by definition there is no faster runner because he is always overtaken by the point he is trying to arrive at.

What the Zeno paradox does is that it abstracts away from a sequence, say the 100 meters Achilles has to run, and makes that set a point of nullity, void for conception, such that it is used to divide two points of motion from each other, giving their context in relation to the void more importance than their qualities that contradict and distinguish as something rather than nothing, which is their quality of motion: one faster and one slower.

But their qualities of motion, in a void conception, appear to be non-moving. For example, if you look at an object in pure space, it is hard to pick out if it is moving or not. The Zeno effect produces an absolute nullity, making every relative motion absolutely one object, such that the totality of all things moving in relation to each other appears as a non-moving whole.

Motion is disapproved by taking away any relative point and putting it in an absolute non-relative void, but this void is the very power of motion because it constitutes the primary condition of self-determination.

The power of that limit is the void space, such that every time the previous point goes into the space, the subsequent one has already taken to the corresponding space away. The Zeno argument falls only because it is used to dismiss motion when, in fact, it is an argument that proves motion. The Zeno paradox is only wrong in conclusion, not presupposition. The power of abstraction of a void is the conception of that in a sequence in motion.

Consciousness, Conception, and the Observer

In modern times, we only have empirical evidence of the observer effect but fail to explain what this evidence means, especially what is the phenomenological and ontological understanding of the observer effect as function of consciousness related to the conception of physical object.[7]

(see consciousness as the centre and smallest point. How smallest is determined not by quantity, like individual cell, but by species. Species of cell is more fundamental than the individual organs and bodies it makes. Cosmological principle: consciousness as the smallest point is infinitely falling into the centre, meaning that it is falling away from every conceivable form so as to conceive them. The first-person subjective conception is in quality the smallest point; even conception of the whole universe is the smallest point because it becomes subject to Whitehead’s conception: conception discloses the objects within its reference frame.)

The uncertainty principle implies that outside the conception of consciousness, anything is everything. The observer effect as function of consciousness, which differs from being merely a function of perception, in that the former is determined by thought: having thought is the conception analogous to having sight is the observation.

When the observer, which in this sense is the thinker, conceives something, that conception changes the phenomenon from being potentially everything to being actually something. Consciousness is the function of mind that yields the object to the thought. The change of the object by its conception means that it conforms to the idea of that conception.[8]

The issue with the image of creation is the old problem of the infinite regress paradox concerning the source of the creator: the creator of the creator. Find the turtle problem—turtle on turtle.[9]

The mechanical model gives up on this paradox by arguing knowledge of the operator is not needed for knowledge of the system because, as long as the operations of the mechanism are presentable, knowledge of the operator behind it is not relevant. (Alan Watts.)

The specialized sciences cannot afford to rely on providing proof of God before they empirically demonstrate any phenomena said to be its creation. The physical sciences do not keep the idea of God as cause of things without empirical demonstration of this causal relation. Physical science therefore turns to the causal relation among things themselves as enough for sufficient explanation of causation.

The grave danger in the exclusion of God from the origin of things risks removing the effect of the observer on the phenomena. We see this in scientific materialism, wherein knowledge of self is not required precursor for making accurate empirical observations about external phenomena.

The arrival of quantum mechanics reintroduces to modern thought a new inquisition of the self with the notion of the observer being an integral part of the physical phenomena.[10] (see the term “observer.”)

Uncertainty Principle and Observer Effect

The uncertainty principle implies that certain pairs of physical quantities, such as position and momentum, cannot simultaneously be assigned arbitrarily precise values within a quantum state. The limitation is not simply a technological limitation of measurement; it is a structural feature of quantum theory.[11]

The term “observer” brings with it the intuition of the sensible faculties, like vision, hearing, and so on. However, in quantum mechanics the observer relates more to the philosophical notion of freedom in the realm of thought.

Freedom here is not capacity to act according to caprice, which is instinct usually confused for freedom, but instinct, so far determined by some external stimulus, does not provide sufficient definition of freedom related to will and determination.

Freedom in the bare sense is a state of absolute possibility concerning how something is in the first place determinable. Potentiality linked with the notion of freedom establishes the basis for the question of determination.

(see how the observer effect relates to uncertainty principle.)

Contemporary quantum mechanics does not include the principle of freedom as a basis for determination, and so our understanding of natural processes includes no explanation of the conceiving factors initiating them.

The “observer” in contemporary terms is defined by systems which manifest “subjective decoherence when observed,” which means when an unknowable course of action in subatomic phenomenon is perceived, the cause is labeled “subjective decoherence” because the unknown factor is not viewed as part of the phenomenon but instead is interpreted as a kind of disturbance occurring during the observational method.[12]

Quantum decoherence, however, is ordinarily understood in a more physical sense. It describes the loss of observable quantum interference when a quantum system becomes entangled with its environment. The environment effectively carries information about different possible states, and the system consequently behaves, for many practical purposes, more like a classical system.[13]

This does not necessarily mean that consciousness itself causes decoherence. In contemporary physics, decoherence can occur through ordinary physical interactions with an environment, without requiring a conscious observer. But as to the part in which the cause of the disturbance is itself the unknown effect, the philosophical question remains: what is the status of the factor by which a possibility becomes a determinate phenomenon?

The observer effect, therefore, should be distinguished from the claim that consciousness magically creates physical reality. In quantum experiments, the act of measurement involves a physical interaction between the measured system and a measuring apparatus. The resulting interaction can change the state being measured and can establish which observable becomes definite in the experimental description.[14]

The philosophical question begins beyond this physical description: if the physical interaction explains the change in the measured system, what explains the determination of the phenomenon as this particular object of thought? Here the observer becomes not merely a person looking at a thing, but the question of how possibility becomes conception, and how conception discloses an object within a reference frame.

Footnotes

[1] Light cones and simultaneity. In special relativity, a light cone separates events that can be causally connected to a given event from those that cannot. It does not imply that all points in space or all moments in time exist simultaneously for an observer. Relativity of simultaneity means that different inertial observers can disagree about which spatially separated events are simultaneous, while events inside the observer’s past light cone can in principle have influenced the observer.

[2] Light and information. Light carries information from physical sources, but the fact that information from the past reaches an observer does not establish that the past itself remains physically accessible as a location that can be entered. In ordinary relativity, receiving information about an earlier event is different from traveling backward to that event.

[3] Bosons, fermions, spin, and time. This section requires an important qualification. Bosons are not defined by having spin 0. Bosons have integer spin (0, 1, 2, etc.), while fermions have half-integer spin (1/2, 3/2, etc.). The photon is a boson with spin 1, not spin 0. Spin is an intrinsic quantum property and should not simply be identified with ordinary physical rotation or with “change” itself. There is presently no established physical theory in which the difference between bosonic and fermionic spin makes backward time travel possible.

[4] Higgs boson. The Higgs boson is the experimentally observed quantum excitation of the Higgs field. Through the Higgs mechanism, interactions with the Higgs field contribute to the masses of the elementary particles of the Standard Model. The Higgs mechanism is distinct from supersymmetry, and supersymmetry remains a theoretical extension rather than an experimentally established symmetry of nature.

[5] Relativity and relation. Physical descriptions are often relational in the sense that quantities such as velocity require a reference frame. This should not be taken to mean that Newton’s laws themselves establish that nothing can move independently of everything else. Newtonian mechanics permits inertial motion without requiring physical contact with another object.

[6] Zeno’s Achilles paradox. In the Achilles and tortoise paradox, Achilles must first reach the point where the tortoise began, but by then the tortoise has moved farther. Achilles must then reach that new point, while the tortoise moves again. The apparent contradiction arises from treating a potentially infinite division of a finite distance as though completing infinitely many subdivisions necessarily requires an infinite amount of time. Modern calculus represents the relevant infinite sequence as converging to a finite distance and finite time.

[7] Observer effect. In physics, “observer effect” generally refers to the fact that obtaining information about a physical system can involve an interaction that changes the system. It should not automatically be equated with consciousness. Quantum mechanics does not require a human mind to be present for physical measurement interactions or decoherence to occur.

[8] Uncertainty and conception. The uncertainty principle does not state that “outside the conception of consciousness, anything is everything.” Rather, it establishes mathematical constraints on the simultaneous preparation or determination of certain pairs of observables. The stronger statement concerning consciousness and conception is a philosophical interpretation rather than a consequence established by the uncertainty principle itself.

[9] Turtles all the way down. The “turtles all the way down” story is commonly used to illustrate an infinite regress: when asked what supports the world, one gives an explanation in terms of another supporting structure, which then requires another explanation, and so on. The story has circulated in several forms and is often associated with the problem of explaining the ultimate ground of an explanatory system.

[10] Quantum mechanics and the observer. The development of quantum mechanics did make the measurement problem central to modern physics, but different interpretations understand the role of the observer differently. Some interpretations emphasize measurement, some decoherence, some branching or many-worlds descriptions, and others propose different mechanisms. There is no consensus that consciousness is physically required for quantum measurement.

[11] Heisenberg uncertainty principle. The uncertainty relation can be expressed schematically as ΔxΔp ≥ ħ/2 for position and momentum. More generally, uncertainty relations arise from the mathematical structure of non-commuting quantum observables. The principle concerns quantum states and observables, not simply the imperfection of human perception.

[12] “Subjective decoherence.” “Decoherence” is a standard physical term, but “subjective decoherence” is not generally the standard term for an unknown factor introduced by a conscious observer. In standard quantum theory, decoherence is associated with entanglement between a system and its environment and does not require subjective consciousness.

[13] Quantum decoherence. Decoherence occurs when a quantum system becomes correlated with environmental degrees of freedom. Interference between alternative components of the system’s state then becomes effectively inaccessible locally. Decoherence helps explain why macroscopic systems exhibit classical-looking behavior, although decoherence by itself does not necessarily solve every aspect of the quantum measurement problem.

[14] Measurement. A quantum measurement is represented physically by an interaction between a system and a measuring apparatus, followed by correlations between the system and measurement outcomes. The philosophical interpretation of what constitutes the “actual” outcome remains an interpretive question within the foundations of quantum mechanics.

Quantum Coherence

Quantum coherence is defined by a continuous phase disclosing different states. (Whitehead: conception discloses its own measurement.) In other words, coherence occurs so long as a conception maintains a definite reference frame wherein interactions of opposing variables are disclosed.

For example, so long as some object is within the reference frame of my observation, this state is said to be coherent because it has a definite conception. This may not mean that the content of the conception is definite, because what is disclosed by the conception may be indeterminate, but the conception is definite in approximating the details concurring within it. The content of the conception can be indefinite, uncertain, and indeterminate, which speaks to the function of decoherence.

The question of decoherence concerns the paradox of coherency: is the self-identity of the conception a predicate for distinguishing continuities as differing variables, or do the differences of variables predicate for forming the disclosure of the conception?

Quantum decoherence is a loss of quantum coherence through interaction with an environment, where information about the system becomes correlated with environmental degrees of freedom.[1] In other words, decoherence happens when a change occurs in the determinacy disclosing different variables, such that the conception disclosing the differing parts together becomes itself a particular part among the variables of the conception.

This means that, in a quantum state, when a conception is not perfectly isolated but in contact with factors distinguishable from itself, the coherence of the conception decays with time, called decoherence. The behaviour of the conceiving state is changed, or a change is picked out in the conceiving state, such that it is no longer definite, i.e., no longer self-identifiable, and so the conception becomes distinguished as an object within a non-distinct conception.[2]

Decoherence explains the shift of conception as related to the change of physical composition: that is, when the conception of an object changes, the physical properties of the object change such that it is no longer the same and/or different object.

This is subtle in the way perception operates because we do not normally think that a change of perception means there is an actual physical change of the objects, but a change in the realm of perception is the simple shifting away from one object to another while the objects themselves remain definite away from the conception.

When perception alternates from one object to another, the transition appears to happen between two unrelated and non-identical entities. However, the faculty of perception is the conception disclosing that the alteration from one object to a different one remains self-identical throughout the transition.

In the meantime, the self-identity of the conception conforms to the identity of the object as it lays differentiation from other objects. For example, if at one moment the conception of perception is self-identical with an object like a dog, in another moment the perception is self-identical with a tree. But the discontinuity that objects fall out of frame is not due to the limitation of perception alone; it concerns the very limitation of conception generally: a nature of flux. There is an inherent uncertainty.

Uncertainty and the Limits of Conception

The uncertainty principle is not mysterious because it constitutes every aspect of our limited conception, whether the limits of perception or thought. The limit of perception is not in its form but in the capacity to grasp the details of the content of its object.

For example, human vision is comparatively better than a dog’s vision, not simply because of scope—how much can be seen by the eye—but because of colour and the quality of the particular object. Likewise, a dog’s sense of smell is better because of its ability to identify information and make connections between smell and its object.

The identity of the perception changes in accord with its object, and the object is said to have self-identity subsisting independently from its perception. All the while, there exists a substrate of consciousness that remains self-identical behind the changes perception conforms to.

It is important not to conflate the change of perception with the natural change of an object, because this relation is not the same as the more fundamental scope wherein the natural process of generation follows the same manner as mental modes of conception.

In evolutionary biology, there seems to be the appearing and disappearing of life forms characterized by speciation, including the traceability of all new species to common ancestors.[3]

The common ancestor is not any specific group of early organisms because evolutionary biology is constantly refining the reconstruction of common ancestry. The “last universal common ancestor” is understood as the most recent ancestral population from which all organisms now living on Earth descend, rather than as a single identifiable individual organism.[4]

The universal common ancestor is therefore not looked at as any specific kind of organism but rather can be better understood through the processes of natural generation.

According to modern empirical science, all known life on Earth shares common ancestry, and the earliest life was cellular. Life at the cellular level involves processes of reproduction, variation, inheritance, and speciation that eventually result in macroscopic organisms. This is a transition that involves a completely different definition of what we mean by common ancestor.

The evolutionary transition of single-celled organisms into multicellular organisms is a transition from what we know as the microscopic level to the macroscopic scale.

What does it mean to consist of one cell as opposed to a multicellular organism?

A multicellular organism is a clustering together of cells to form a single entity whose capabilities are the specific functions of the bodies making it up. The role that the whole plays is the conceptions of the parts expressing the same idea.

The cell itself can therefore be conceived as an environment developing the self-agency to operate within itself. The cell is a dimension of the environment with a determination to change the conception of itself.

This same relation can be extended conceptually to the cell of a planet: the planet can be understood as an environment whose internal relations generate and sustain forms of agency within itself. The cell and the planetary environment are not identical physical structures, but the analogy concerns the relation between an environment and the organization that emerges within it.

Consciousness Disclosing Physical Change

Consciousness discloses physical change in two ways.

First, change of the physical configuration of objects occurs within the disclosure of a definite conception, wherein the content of the conception changes while the form remains coherent.

This concerns the speculation that if the conception is merely passive and receptive to the change of the object, what active role does the conception play as disclosing the change?

What causes the object, for the conception, to no longer remain the same while meanwhile the conception maintains the same form so as to identify the difference of the object?

Second, the form of the conception, its self-identity, conforms to a compulsion brought about by an unexplainable change assumed to be caused by an object acting independently, so as to make conception limited to the objects having a self-subsisting identity to produce motion independently of the conception.

The difficulty is that the change of the object, even if it has the power to occur with no presence of the conception, is disclosed by a conception that is an indirect presupposition of the change.

This is where Kant’s notion of transcendental apperception becomes relevant. Kant distinguishes the changing contents of experience from the unity of the “I think” that can accompany representations. The unity of consciousness is not itself another object presented among the objects of experience; rather, it is the formal unity through which representations can belong to one consciousness.[5]

Applied to the present argument, the question becomes: where is the quantum state? It is not simply “inside” the external object, nor simply “inside” consciousness. The quantum state is represented through the operations by which a physical system is mathematically and experimentally specified. The state therefore becomes a point of intersection between the physical description of possibility and the operation by which that possibility is disclosed.

This does not establish that consciousness physically creates the quantum state. Rather, it establishes a philosophical question concerning the relation between the state as described and the conditions under which it can be disclosed as a determinate object of knowledge.

Discontinuity and the Discrete Matrix

When an object enters perception, instantaneously another leaves it. We assume that there is a substrate which maintains a stability during the shift in the perception of objects, and that the changing perception is always passive to what is maintained for it as a substrate of objects having movements independently from it.

It is often overlooked that there is a substrate which stands to maintain the stability of the object during change of perception and, equally, the coherency of perception as the object changes before it.

The faculty of perception is related to what is external from it but also related to what is internal in those externalities. What underlies the apparent coherency of perception and its object is a non-stable position in a state of absolute flux.

Decoherence is not discombobulation because it is not a state of disorganization and randomness of physical compositions.

The definition of “flux” is the rate of flow of a constant state of possibility which constitutes the conception as substrate for the faculty of perception, enabling its function to capture a naturally decoherent state of change into an abstraction of stability.

Flux does not mean that, out of view, there is uncertainty because things are constantly moving and happening around, nor does it mean that out-of-view objects have no physical composition because they are not perceived.

The conjunction of the special faculties of sensation is an abstract state. Sight, hearing, touch, smell, and taste are not simply independent streams of information. In ordinary experience, their contents are synthesized into a unified field in which an object can be disclosed as the same object across different modes of sensation.[6]

The discrete matrix can therefore be conceived as the structure by which continuous flux becomes distinguishable into discrete determinations. A continuous field is not experienced as an undifferentiated whole because conception introduces distinctions: this point rather than that point, this object rather than another, this state rather than another.

The discrete does not therefore necessarily mean that reality itself is composed of isolated pieces. It can describe the manner in which a continuous possibility becomes intelligible through distinctions.

Superposition and Decoherence

(see Hegel dialectic.)

Superposition is the physical equivalence of the logical synthesis in the dialectic.

Hegel explains the logical basis of dialectic as the relation of two inverse determinations: their difference is the third determination, which derives a distinction from the two through their relation. It is now a distinct determination that maintains the two by disclosing their difference as the unity. The only similarity they share is the difference, which becomes a different variable.[7]

If cause A produces effect X and cause B produces effect Y, the relation of the causes (A+B) produces the relation of the effects (X+Y). The superposition is therefore the synthesis of two opposing determinations forming one distinct determination.

For example, rolling motion of a wheel is the superposition of two motions. A wheel rolling down a hill is the combination of two separate motions: one, rotation without translation, like a wheel spinning in place; and two, translation without rotation, like a wheel skidding forward without spinning.

In a quantum coherent state, the abstract position of mind allows us to represent a system as containing multiple possible components simultaneously. The wheel is therefore an analogy for how one physical description can contain multiple components that, in ordinary perception, we would distinguish as separate possibilities.

It is not literally the case that a macroscopic wheel in an ordinary quantum decoherence state is physically and consciously “spinning, skidding, and rolling” in the classical sense. Rather, the analogy concerns the mathematical description of a state containing components that can later become distinguishable through interaction with an environment.[8]

This means that there is a physical composition of all these possibilities within the formal description, which is not hard to imagine as three different wheels having each of these forms, but hard to imagine as one wheel having these three states all at the same time.

In a coherent state, like the way perception sees, the wheel is either one of these and not the others, or three different wheels doing each condition.

Perception as Reflection of the Object

In accordance with their moving indeterminate activity, the natural disposition of things is not what is presented for perception as a stable and definite object, but this is only what is disclosed by the particular faculty during its conception.

Rather, things are only abstractly and potentially related as the structure they exhibit when directly perceived.

Examination of the nature of perception shows that the perceiving faculty is in tune and in sync with the already natural process of flux inherent in physical phenomena.

The idea that everything is in flux proves correct in decoherence only in the sense that the conception constitutes abstractions of coherency in the indeterminate state, transforming it into particular definite states whose continuity remains the initial decoherency.

However, this change of conception in the quantum realm is actually the very change of the particularity pertinent to a physical composition.

Even in our ordinary perception, when I turn my head to look at one object as opposed to another, there is a physical change: the movement of one object coming into my viewpoint as the other object falls out of view.

Coherence concerns, first, that there is some definite thing within the viewpoint of the conception and, second, that even the change of the conception—its decoherence—is a definite thing.

Decoherence is the thinking process operating behind the scenes of what we come to understand as coherent experience.

Experience of the world appears stable and coherent while thought seems disoriented and always in flux.

Instead of viewing the distortion as an effect from an unknown principle, it is taken as the cause of unknown data.

Conception as the Basis of Motion

Conception is the basis of motion.

Consciousness abstracts from the realm of possibility some indistinguishable form as not everything: a particular form of relation.

For example, anything moving, when perceived, will appear as going in the path of some geometric form, while everything generally becomes its plane, even though, when the frame of reference changes, something else is picked out as having some moving path.

This relation, so far as it is being conceived, conceptualized as a particular form different from the whole of possibilities, keeps reaffirming itself as that specific thing—a feedback loop.

Its motion therefore appears as if it is taking up every possible position, that everything else is void because it is out of the frame of reference, that is, void of itself, and putting itself in all those positions continuously.

But so long as it is particular, why is it distinguishable?

Because if it took all the positions at once, it would be indistinguishable as anything other.

Therefore, its particularity appears as if it is moving from one position to another over and over again.

This constitutes the nature of pattern. Every specific kind of motion appears as something going in a circle, back and forth in a straight line, or in zigzags. These are all feedback loops of patterns whose motion reaffirms their particular form.

The object is therefore not simply a thing that moves through an already completed space. Its motion is the continuous determination of its relation within a field of possibilities. The conception isolates this relation, maintains it as a pattern, and thereby discloses motion as a definite continuity.

In this sense, coherence is not the absence of change. Coherence is the continuity through which change can be identified as change.

Decoherence is therefore not simply the destruction of coherence. It is the disclosure of the conditions under which one determination becomes distinguishable from another.

The paradox of coherence is consequently the paradox of identity itself: whether identity is what permits difference to appear, or whether difference is what allows identity to be recognized.

Footnotes

[1] Quantum coherence and decoherence. In quantum mechanics, coherence refers to a well-defined phase relationship between components of a quantum state. Decoherence occurs when interaction with an environment entangles the system with environmental degrees of freedom, suppressing observable interference between components of the system. Describing decoherence simply as a “loss of information from a system” is useful informally but requires qualification: information is not necessarily destroyed globally; it becomes distributed into correlations with the environment.

[2] Conception and decoherence. The claim that decoherence means a conception becomes an object within a non-distinct conception is a philosophical interpretation of the physical process, rather than the standard physical definition of decoherence.

[3] Evolution and common ancestry. Modern evolutionary biology supports common ancestry among terrestrial life. Speciation is the process through which populations become distinct evolutionary lineages. The reconstruction of ancestral relationships is probabilistic and continually refined as new genetic, fossil, and comparative evidence becomes available.

[4] LUCA. LUCA—the Last Universal Common Ancestor—is not necessarily the first organism or the single first living cell. It refers to the most recent ancestral population from which all currently living organisms descend. Contemporary research generally treats early’s “transcendental unity of apperception” concerns the unity of self-consciousness required for representations to belong to one consciousness. It is important not to identify Kant’s transcendental subject directly with a physical quantum state. The connection proposed here is philosophical: both raise the question of life and its ancestry as a population-level evolutionary process rather than as a single identifiable organism.

[5] Kantian apperception. Kant’s “transcendental unity of apperception” concerns the unity of self-consciousness required for representations to belong to one consciousness. It is important not to identify Kant’s transcendental subject directly with a physical quantum state. The connection proposed here is philosophical: both raise the question of the conditions under which disparate determinations can belong to a unified representation.

[6] Synthesis of sensation. The idea that different sensory modalities contribute to a unified perceptual experience is compatible with ordinary accounts of multisensory integration. The stronger claim that this synthesis constitutes a metaphysical substrate of reality is philosophical rather than an established empirical conclusion.

[7] Hegelian dialectic. Hegel’s dialectic should not be reduced simply to “two opposites plus a third.” His account concerns the movement by which determinations reveal internal contradictions or inadequacies and develop into more comprehensive determinations. The language of “synthesis” is commonly associated with interpretations of Hegel, but it can oversimplify his actual method.

[8] Superposition versus classical combination. Quantum superposition is mathematically different from merely combining several classical physical motions. A quantum state can contain amplitudes associated with distinct alternatives, and interference can occur between them. Decoherence suppresses the observable interference through environmental interaction, producing effectively classical alternatives. The wheel example is therefore an analogy ratherthan a literal description of an ordinary macroscopic wheel.

Quantum Decoherence and the Possibility of a Fundamental Rationality of Nature

Quantum decoherence is a process in quantum physics through which a quantum system loses the ability to display certain kinds of interference because it interacts with its surrounding environment. A quantum object can initially exist in a superposition of different possible states. For example, a system can be described as being in a combination of state $A$and state $B$, rather than simply being in one or the other. When the system interacts with its environment, the environment becomes correlated with these different possibilities. The result can be represented schematically as $\alpha \mathrm{\mid }A⟩\mathrm{\mid }{E}_A⟩+\beta \mathrm{\mid }B⟩\mathrm{\mid }{E}_B⟩$. When the environmental states become sufficiently different, the interference between $A$ and $B$ becomes effectively unavailable to an observer who considers only the original system. This process is called decoherence.[^1]

Decoherence is therefore important because it helps explain how the stable, apparently classical world emerges from a deeper quantum description. The quantum description contains many possible alternatives, while interaction with the environment produces stable correlations between those alternatives and physical surroundings. In this sense, decoherence can be understood as a physical process through which differences become stable and physically meaningful. The distinction between $A$ and $B$ is no longer merely an abstract possibility inside the mathematical description; the environment contains physical information that distinguishes the two states.[^2]

This becomes philosophically interesting when considering the relationship between physical reality and rational thought. Rational thinking also depends upon distinctions. To think about something as $A$, rather than $B$, requires a distinction between $A$ and $B$. Similarly, a logical statement such as “if $A$, then $B$” depends upon relations between distinguishable possibilities. Concepts, judgments, information, and reasoning all require some structure in which different possibilities can be distinguished from one another. This does not mean that a quantum system is thinking or reasoning. Rather, it suggests that the structure required for rational thought may have a more general form that is already present in physical reality.

This possibility can be developed through a philosophical view sometimes called neutral monism or, more broadly, a form of dual-aspect monism. The basic idea is that reality is fundamentally one rather than being divided into two completely separate substances called “matter” and “mind.” Physical descriptions and mental or rational descriptions could then be different ways of describing different aspects or levels of the same underlying reality. A physical process may be described in terms of particles, fields, interactions, and causal relations, while a more developed organization of similar relational structures may be described in terms of information, representation, concepts, and reasoning.[^3]

From this perspective, decoherence does not itself create consciousness or rational thought. That would be too strong a conclusion. A rock, an atom, or a molecule can undergo decoherence without becoming a thinking subject. What decoherence provides is something more fundamental: stable physical distinctions and correlations. These distinctions make information possible, and information can become increasingly complex when physical systems develop structures capable of storing, processing, and using it. Biological organisms can then use information to respond to their environments, nervous systems can develop representations, and eventually cognitive systems can form concepts and perform reasoning. The proposed relationship can therefore be expressed as: quantum possibilities → physical distinctions → information → representation → cognition → rationality.

The idea of a “fundamental rationality” of physics should therefore not mean that nature literally thinks. It can instead mean that the world contains a fundamental order of relations and constraints that can eventually appear in a rational form within sufficiently complex systems. Physics describes how physical states constrain possible future states. Logic describes how propositions constrain possible conclusions. For example, if $A$ is true and $A\to B$, then $B$ follows. In physics, a present physical state similarly limits which future states are physically possible. These are not the same process, but they share a structural feature: possibilities are constrained by relations.

This leads to a deeper conception of rationality. Rationality can be understood, at a very abstract level, as the organization and propagation of constraints between possibilities. Physical reality already contains enormous numbers of such constraints. A physical system cannot simply evolve into any imaginable state; its evolution is restricted by its physical conditions and laws. In a cognitive system, these constraints can become representations and logical relations. Thus, reasoning would not have to be something completely foreign to nature. It could be understood as a highly developed form of relational organization that has its roots in the structure of the physical world.

The philosophical argument can therefore be stated cautiously. Quantum decoherence shows that physical interaction can transform quantum alternatives into stable correlations and distinctions. Stable distinctions make physical information possible. More complex physical organizations can process information and eventually develop representation and cognition. Rational thought can then be understood as a highly developed form of organization in which distinctions and constraints are represented conceptually and used in inference. On this interpretation, physical reality and rational reality are not two completely unrelated worlds. They are different levels of organization or different descriptions of one underlying reality.[^4]

The deepest philosophical question is consequently not simply whether “quantum particles are rational.” They are not rational in the ordinary meaning of the word. The deeper question is why the same reality described by physics possesses a structure that can eventually be represented, understood, and reasoned about by minds. If physical relations, informational relations, and rational relations share important structural features, then rationality may be regarded not as something mysteriously added to an otherwise completely non-rational universe, but as a higher-level manifestation of relational structures already present in nature.

In this sense, quantum decoherence can serve as one part of a philosophical picture in which reality moves frompossibility to distinction, distinction to information, information to organization, and organization to thought. Decoherence does not prove this entire philosophical picture, and current physics does not establish that rationality is a fundamental physical property. The claim is instead a metaphysical proposal: the physical, informational, mental, and rational descriptions of reality may ultimately refer to different aspects of one underlying order rather than to completely separate substances.

Footnotes

[^1]: Decoherence is commonly described using the interaction between a quantum system and its environment. The system becomes entangled with environmental degrees of freedom, and interference between certain alternatives becomes effectively suppressed in the reduced state of the system. See W. H. Zurek, “Decoherence and the Transition from Quantum to Classical,” Physics Today 44, no. 10 (1991), 36–44.

[^2]: This does not mean that the quantum superposition has simply been destroyed at the level of the total system. The system and environment can remain in an entangled quantum state. Decoherence concerns the practical disappearance of interference in the subsystem when environmental degrees of freedom are not controlled.

[^3]: The idea has connections with philosophical positions associated with thinkers such as Spinoza, William James, Bertrand Russell, and contemporary discussions of neutral monism and dual-aspect theories. These positions differ substantially from one another, so the connection should not be understood as claiming that they all proposed the sametheory.

[^4]: This distinction is important: the movement from physics to information, cognition, and rationality is a philosophical hypothesis, not something established by decoherence theory alone.

last updated 10.02.2026