Cosmological Pangaea: The Hard Problem of Consciousness

By Charles Richard Walker

I have spent a great deal of time thinking about consciousness, but I have never claimed to have solved it. I want to make that clear at the beginning because consciousness has a way of attracting declarations that outrun what anyone actually knows. We can map neural activity, interfere with it, alter perception, suppress awareness with anesthesia, watch different networks become active, and build increasingly sophisticated models of how brains process information. None of that has answered the question that makes consciousness such a stubborn problem.

Why is there something it is like to be us? Why does red look like anything? Why does pain hurt instead of merely producing an avoidance response? Why is there an inside to this machinery at all? That is the territory philosopher David Chalmers famously labeled the Hard Problem of consciousness. We have made enormous progress on what might be called the machinery around consciousness. We can investigate perception, attention, memory, learning, sensory integration, decision-making, and behavior. The difficulty appears when we make one additional move and ask why any of those physical processes should be accompanied by subjective experience.

I do not have an answer to that question. What I have begun to wonder is whether we have been staring at the Hard Problem from the wrong end. My own route into this question came from work that originally had very little to do with brains. In developing Cosmological Pangaea, I started from a proposition I call Axiom D, which concerns distinction. The important qualification is that I do not treat Distinction as some mysterious substance hiding underneath matter. It is not another particle, field, form of energy, or cosmic material. My narrower proposition is that distinguishability is a necessary condition for physically different states to exist at all. If nothing can be different from anything else, then there are no physically distinguishable states to talk about in the first place. That is the foundation from which the rest of this particular thought experiment proceeds.

That sounds like a long way from consciousness, but I am beginning to think it may not be. In Cosmological Pangaea, the Garden and Pangaea are not the same thing. The Garden contains the conditions capable of producing Pangaea; Pangaea is the object that emerges from those conditions. For the question I am exploring here, the important moment comes after Pangaea exists, when the first separation makes actual distinction possible. What had been unified can now be distinguished as A and B. Once there is an A and a B, something becomes possible that could not have existed before: B can, in the most primitive conceptual sense, look back and distinguish A.

I want to be extremely careful with that sentence because it would be easy to make it say far more than I intend. I am not proposing that B opened a pair of cosmic eyes. I am not claiming that Pangaea suddenly became conscious. I am certainly not suggesting that two primordial physical states sat around contemplating one another. I am describing what I think of as the primordial precursor of observation.

Observation, in the sense familiar to a human being, requires an enormous amount of machinery that does not exist at this point. There are no eyes, neurons, sensory organs, memories, representations, or thoughts. Underneath every one of those sophisticated forms of observation, however, lies something much more elementary: there must first be a distinction capable of standing in relation to another distinction. There cannot be an observer and an observed while there is only an undifferentiated one. There cannot even be here and there, this and that, self and other, signal and receiver, or subject and object until distinction exists.

That does not solve consciousness. It does something different. It asks how far down the ancestry of consciousness we can travel before the concepts necessary for consciousness cease to make sense. Normally we approach the problem from the other direction. We begin with ourselves. Here is a human being. Here is a brain containing billions of neurons. Here are electrical impulses, neurotransmitters, oscillations, networks, sensory systems, memories, and behavior. Somewhere inside that extraordinary machinery is the fact that I am experiencing something right now.

Then we begin removing pieces. Does consciousness require language? Apparently not. Does it require abstract reasoning? Probably not. Does it require a human brain? That becomes more difficult. What about another mammal? A bird? An octopus? An insect? At what point does complicated information processing become something that experiences? Eventually we reach organisms simple enough that our confidence begins to disappear, and then we encounter the familiar argument over where consciousness begins. I want to turn the telescope around. Instead of starting with the human mind and stripping pieces away, suppose we begin with the minimum possible condition and build upward. Before consciousness can perceive a difference, there must be a difference. Before something can distinguish itself from something else, there must be an else. Before there can be subject and object, the possibility of relation must exist.

That is why the first separation from Pangaea interests me in connection with consciousness. It is not because I think that separation was conscious. It is because the separation establishes the first condition under which the distant ancestry of observation becomes conceptually possible. There is A, and there is B. B can stand in relation to A. There is now a difference from which another difference can be distinguished. Calling this consciousness would be premature. Calling it thought would be absurd. Calling it observation in the ordinary human sense would import billions of years of later machinery into a condition that contains none of it. That is why I prefer primordial precursor of observation. It describes the beginning of a relationship, not the finished phenomenon we are eventually trying to understand.

Once I began thinking about consciousness this way, something else in my work started looking different. The road from distinction to human consciousness does not have to contain a magical moment at which ordinary matter suddenly receives an unexplained ingredient called mind. It can instead be examined as a long accumulation of physical capabilities, with each new capability becoming possible because earlier ones already exist.

Difference comes first. Differences can then persist, and persistence creates the possibility of history. Once the present condition of a system depends upon something that happened previously, we have the primitive ingredients from which memory can eventually emerge. I use memory very broadly at this stage. A molecule does not need to remember its childhood. A physical arrangement that persists long enough to influence what happens next already carries something of the past into the future. In the biological world, replicating molecules take this farther because their structure can be passed forward. In The Ontology of Consciousness, I described memory in this minimal sense as beginning long before brains because a molecular arrangement that persists long enough to influence what happens next already carries information from one moment into another.

There is another part of this climb that I think matters just as much, and it is easy to overlook because we tend to talk about consciousness almost entirely in terms of information. Once distinction is actualized in physical systems, maintaining particular organized distinctions is not necessarily free. I do not put a Landauer bill on distinguishability itself. That would turn Distinction back into a substance and charge it rent before there is even a landlord. My own framework explicitly places thermodynamic cost only after sufficient physical structure exists for concepts such as energy, entropy, and irreversible information processing to become meaningful.

After that point, however, the ledger matters. A gradient that is not maintained falls. A boundary that is not repaired dissolves. A difference that is not preserved disappears. The ancestry of observation therefore begins to look like more than a lengthening chain of relations. It becomes a lengthening chain of physically maintained relations, and maintenance has a cost. Life makes that point impossible to miss. A cell builds a wall, but the important thing is not the wall itself. It is what the boundary makes possible. There is now an inside and an outside. A membrane maintains differences. Concentrations can be higher on one side than the other. Electrical charge can be separated. Chemical potential can be stored and released. The cell continuously spends energy preventing those distinctions from being erased by equilibrium.

The cell wall is therefore not merely a convenient metaphor for inside and outside. It is part of a thermodynamic machine for preventing those two conditions from simply collapsing into one another. The same primitive theme keeps reappearing at increasingly sophisticated levels: A versus B, inside versus outside, environment versus organism, food versus poison, danger versus safety, self versus other. The differences are becoming more complicated, but something else has changed as well. Some differences now matter to the persistence of the system maintaining them.

That distinction is important because the universe does not suddenly become conscious simply because distinctions accumulate. I am not trying to sneak panpsychism in through the back door. A rock having distinguishable states does not mean the rock is secretly thinking about them. The interesting question is what happens as physical systems become increasingly capable not merely of containing distinctions, but of preserving them, responding to them, comparing them, and eventually constructing internal representations of them.

That is where nervous systems become important. The physical world contains vastly more information than an organism can possibly process. A nervous system survives partly by throwing most of it away. Photons, vibrations, chemical signals, temperature, pressure, pain, balance, bodily position, and countless other physical events continually bombard a living creature. The organism does not construct a perfect duplicate of reality. It filters.

As I described it in The Ontology of Consciousness, brains reduce, select, group, compare, and compress the overwhelming physical world into useful handles. The visual system does not need to preserve every photon reflected from something in front of us. It gives us a chair. An enormous collection of color, motion, shadow, memory, and geometry becomes a face. A complicated landscape becomes a path. That is an extraordinary advancement over the primitive relationship between A and B. A biological system can distinguish A from C, remember what happened the last time it encountered A, predict what A might do next, decide whether A is useful or dangerous, and alter its own behavior accordingly. Difference has acquired meaning for the survival of the system.

Meaning in this sense does not have to descend from somewhere outside physics. It can begin as compression. An organism preserves the distinctions that matter and discards most of those that do not. A rabbit does not need a complete anatomical model of the animal running toward it. “Predator” will do just fine.

This is also where the cost ledger follows us upward. The nervous system is not merely a filter; it is an expensive filter. Nervous tissue requires continuous metabolic support. Ion gradients must be maintained, electrical signaling consumes energy, chemical transmitters have to be produced and recycled, damaged components require repair, and memory itself must survive molecular turnover and noise. Thinking does not float above metabolism. It depends continuously upon physical machinery being kept within a workable range.

Prediction adds another layer. Memory allows the past to influence the present. Prediction allows an internal model of the present to influence what the organism does about the future. A sufficiently capable organism begins running crude versions of tomorrow before tomorrow arrives. Prediction is not free wisdom. It is a wager that running a cheaper tomorrow inside the system will cost less than discovering the real tomorrow by falling off the cliff.

Then something happens that I find particularly important. Eventually the map puts the mapmaker on the map. An organism benefits from modeling not only predators, food, cliffs, shelter, and other organisms, but itself. Where am I? What condition is my body in? What have I done before? What can I do now? What is likely to happen to me if I do this instead of that? The internal model begins containing a representation of the organism doing the modeling.

That gives us something recognizable as a self-model. In my book, I describe the self in precisely those terms: the map becomes complicated enough to include the organism making the map. The nervous system that compresses the external world also compresses its own body and history into an internal reference point from which action can be organized. There may be additional stations on this climb that we have not yet described properly.

One I keep circling in other work involves the physical environment generated by neural activity itself. Neurons move charge, and moving charge generates electromagnetic fields. If those fields can influence subsequent neural activity under the right conditions, then the traffic of the nervous system does not merely travel along channels. The traffic helps generate an environment, and that environment can lean back upon the traffic that produced it.

I am not saying that an electromagnetic field is consciousness. I am not saying that we have discovered the physical location of subjective experience. I am interested in the relationship. A system produces physical activity that becomes part of the conditions influencing what the system does next. If such feedback performs no meaningful integrative work beyond mechanisms we already understand, it can be demoted accordingly. If it performs work that cannot be reduced to the ordinary map of connections, then we may have been missing another terrace on the climb. Either outcome is scientifically useful because the question is physical and testable rather than an invitation to cosmic poetry.

This is where some of the language I developed later in The Ontology of Consciousness becomes useful to me, provided I do not mistake names for explanations. A filter throws most of the world away so a creature can act in time. A lever is a relatively small distinction capable of producing a much larger change in the system. Channels are the permitted routes through which distinctions propagate. Marks are what remain after something has happened, allowing the past to matter to the present. Silence is not necessarily emptiness; it can be a condition in which distinctions fail to propagate or find no receiver. These are different ways in which physical differences can acquire history and consequence.

The one that interests me most for this particular problem is what I have called Witness. I do not mean a little observer sitting somewhere inside the brain watching the screen. I mean something more restrained: a condition in which a system’s own marks become available as marks to the same system that made them. I am not announcing that Witness equals consciousness. I am naming a possible station on the climb that is later than “B can distinguish A” and earlier than the fully human statement “I see that.”

If I follow that thread all the way backward, the continuity becomes difficult for me to ignore. At the beginning of this thought experiment, B can distinguish A. Much later, a living system distinguishes what lies inside its boundary from what lies outside. Later still, an organism distinguishes useful from harmful, remembers previous distinctions, predicts future ones, and constructs representations of the world around it. Eventually the representing system becomes one of the things represented, and eventually the marks produced by the system can become objects for that same system. The distinction has turned inward. The system does not merely distinguish the world; it distinguishes itself within the world.

That is an astonishing climb from the primordial precursor of observation. It is also exactly where I have to resist the temptation to declare victory, because none of it solves the Hard Problem. In fact, I think following the climb carefully makes the Hard Problem sharper. I can tell a plausible physical story about why an organism benefits from distinguishing a predator from a rock.

I can explain why memory provides a survival advantage. I can explain why prediction is cheaper than repeatedly learning about cliffs by falling off them. I can understand why a model becomes more useful when the organism itself appears inside that model. I can even imagine increasingly elaborate feedback in which the consequences of a system’s own activity become part of the conditions governing what it does next.

None of that tells me why there is something it feels like to be the organism running the model. That distinction is already central to The Ontology of Consciousness. Information processing can explain why a system distinguishes red from green or danger from safety without explaining why there is something it feels like to be the system making that distinction. A functional account of perception, memory, prediction, and self-modeling does not earn the right to declare the mystery of consciousness solved.

This is where another distinction has become increasingly important to me. Objective distinction is a difference that exists whether or not any system is organized around it. What I might cautiously call subjective distinction, before importing consciousness into the definition, would be a difference that exists for a system: a difference with a cost, a use, a history, and eventually a place within a model that also contains the modeler.

The word for is dangerous here, and I know it. A thermostat responds to differences that matter to its operation. An immune receptor responds selectively to particular molecular configurations. I am not handing thermostats or immune systems an inner life. “For the system” is not the same thing as “felt by someone,” and confusing those two statements would simply hide the Hard Problem inside a convenient word. But that may help expose the problem more cleanly. Perhaps the Hard Problem, turned around this way, can be expressed as the question of when “for the system” becomes “for someone.”

I do not know the operator that performs that promotion, assuming there even is a single operator. Integration is a candidate. Recursion is a candidate. A threshold of self-modeling is a candidate. Particular forms of biological organization are candidates. Endogenous field interactions may turn out to contribute something important or very little. There may be mechanisms we have not discovered or concepts we have not formulated correctly. None of these possibilities has yet produced a receipt explaining why red is like anything.

That is the wall. I can climb from Axiom D through the Garden’s production of Pangaea and the first separation, through persistent physical structures, thermodynamic cost, living systems, biological boundaries, filtering, memory, prediction, self-modeling, recursive physical feedback, and Witness, and I still eventually reach the same question everyone else reaches. Why does any of it light up on the inside? The cost ledger makes that question even more interesting to me.

The Hard Problem is sometimes framed as though experience were an additional glow placed on top of an otherwise complete computation. Yet there is no complete physical computation sitting motionless while we decide whether to add consciousness. Living systems are ongoing work against erasure. Boundaries are maintained, gradients are restored, signals are propagated, memories are preserved, models are updated, and damage is repaired. Whatever consciousness eventually turns out to be, if it is part of the physical story at all, it occurs inside that continuing expenditure rather than hovering costlessly above it.

I do not know whether “what it is like” attaches to any particular part of that work. I do know that any account that introduces consciousness as a costless annotation on an otherwise finished physical system immediately makes me suspicious. One rule I have tried to maintain throughout my broader work is simple: no free ontological lunches. Approaching the Hard Problem from this direction therefore changes the question I want to ask. Perhaps consciousness is not best investigated only by looking for the moment when some special ingredient appears.

Perhaps we should also examine the increasingly sophisticated relationships that become possible once distinction exists and ask where along that climb objective distinction becomes subjective distinction, and where subjective distinction in the minimal sense of being for a system becomes experience for someone.

The first separation gives us A and B. Biology eventually gives us systems for which distinctions matter. Nervous systems give us systems capable of representing those distinctions. Memory gives those representations history. Prediction gives them possible futures. Self-modeling places the system itself inside its representation of the world. Witness, if the concept earns its keep, gives us a system capable of encountering the marks of its own activity as part of what it represents. And consciousness, somehow, gives us the extraordinary condition in which there is something it is like to be that system.

I do not know where that last transition occurs. I am not even certain that “transition” is the correct word. It could be gradual. It could depend upon a threshold of organization. It could emerge from a particular kind of recursive self-reference. It could depend upon integration, electromagnetic dynamics, biological architecture, or something we have not yet identified. It could eventually require us to rethink some of the categories I have just used. Those are open questions, and I want them to remain open.

What I find useful about starting from Axiom D is that it gives me somewhere deeper to stand while asking them. The conventional Hard Problem begins with consciousness already in the room. We know subjective experience exists because each of us encounters at least one instance of it directly. We then look down at the brain and ask how this physical object produces that experience.

I am asking whether we can learn anything by beginning before either the brain or experience exists. Start with the possibility of difference itself. Allow the Garden to produce Pangaea. Let the first separation occur. Now there is A, and there is B, and something that was impossible before becomes possible: B can distinguish A. Much later, B can respond to A. B can preserve something about A. B can remember A. B can predict A. B can build an internal representation of A.

Eventually B can represent B, and eventually the consequences of what B does can become part of what B encounters. Somewhere across the extraordinary distance between that primordial precursor of observation and the human being reading these words, looking at the world and knowing that there is a world being looked at, something happens that our current explanations still do not capture.

If we start from the human being and subtract, we argue about animals, insects, machines, and how much machinery can be removed before experience disappears. If we start from distinguishability and add, a different landscape appears. We encounter relations, boundaries, persistence, thermodynamic costs, filters, memory, prediction, self-models, feedback, marks, and eventually systems capable of taking aspects of their own activity as objects. Both directions eventually die at the same wall.

The second direction at least allows me to see the wall as a wall rather than as a missing spark in an already furnished room. I am not proving that the trail of consciousness begins at the first separation from Pangaea. I am pondering whether observation has an ancestry, whether that ancestry can be followed through increasingly sophisticated physical relationships, and whether we have been so eager to find the moment when the lights come on that we have under-described the long history during which “lights” were not yet the right metaphor.

There is a difference between a universe in which A and B can be told apart and a universe in which telling them apart has started to matter to the thing doing the telling. There is another difference between something mattering to a system and there being someone for whom it matters.

Consciousness, whatever it ultimately is, lies somewhere on the far side of that second distinction. I still cannot cross it. Neither can I pretend that naming all the steps leading toward it makes the final step disappear. That would merely rename the Hard Problem rather than solve it. But the road leading to that wall may begin much earlier than the brain we keep staring at. Before there could ever be a creature capable of saying, “I see that,” reality first had to permit it. The Hard Problem remains. I am simply asking whether we have been staring at it from the wrong end.

Charles Richard Walker (C. Rich)
Functional Consciousness Project
https://zenodo.org/records/22050023
Independent Researcher / mylivingai.com
ORCID: 0009–0007–6541–3905