Descartes, Cogito and Monism: The Thinking Wave

Abstract / Summary

This essay begins with the occurrence of thinking and follows fourteen steps towards the physical world that makes a thinker possible. Experience changes; its human capacities depend on a living body; that body has an evolutionary history. Seeing a tree connects an organism to a world that preceded it. The search for what physically sustains this connection leads to monism: distinguishable organisations within one active substance. WSM gives that proposal a particular construction in longitudinal waves of Space, whose continuing interactions reconstruct matter. The journey then returns through chemistry, life and nervous organisation to memory, finite knowledge, imagination, truth and agency. A representation can be mistaken and still change what happens next. Human–AI communication extends the exchange and criticism of representations; its value depends on how faithfully they preserve the relations they describe. The argument distinguishes immediate experience, empirical evidence, metaphysical inference and physical postulates, so its scientific obligations remain visible within its human story.

Reading method. Thinking begins the inquiry; the folded postulates state WSM’s proposed physical answer. The argument below assesses how far its logical and empirical foundations reach that answer. Its principal distinctions are gathered at the foundation reached.

Claim-status key

The tree in the mind

You look towards a tree. Light and shade disclose its branches; a leaf trembles against the sky. Close your eyes and something of it remains. The tree you remember has no roots in the soil, yet it can guide your next step. Open your eyes: the living tree is still there, exceeding whatever you retained of it.

Before constructing a theory of Space, we already experience being somewhere. We turn towards a voice, reach for a cup, sense a hand’s position with our eyes closed. A sentence unfolds while its beginning remains in memory. Difference, direction and change enter our lives before philosophy supplies their names.

How does the tree outside become the tree in the mind? What sustains both? We shall begin with the experience, follow its connections into the world that formed the thinker, and return through WSM’s account of vibrating Space. The mind’s tree will lead us into the physical forest that creates and maintains its possibility.

From thinking to an embodied world

1. Thinking cannot be doubted.

Try to doubt that thinking occurs. The doubt is itself a thought. Whatever else we question, the questioning happens. Descartes sought a beginning that could survive the collapse of inherited certainties. Here was something his own attempt at doubt could not remove.

I think, hence I am, was so certain and of such evidence, that no ground of doubt, however extravagant, could be alleged by the sceptics capable of shaking it, I concluded that I might, without scruple, accept it as the first principle of the philosophy of which I was in search.

— René Descartes · Discourse on the Method (1637) · supplied translation

This secures the occurrence of thinking. What kind of being thinks remains a further question. Descartes’ argument for distinguishing thinking mind from extended body belongs to his subsequent philosophy; it is not contained in the bare occurrence of doubt.

2. Reasoning requires distinctions and relations.

A meaningful denial distinguishes what it denies from what it asserts. Reasoning preserves such distinctions while following their relations. A thought can occur perfectly really and represent something falsely: I may remember an oak where a different tree stood. Its existence and its accuracy answer different questions.

The same applies to inference. A physical process can produce a sound argument or a mistake. Logical validity depends on whether the represented steps preserve truth under the stated premises and interpretation. Memory retains the claim; reasoning examines what follows; observation checks its correspondence to the world.

3. Experience occurs.

Colour, sound, warmth, pain, remembered words: these are experienced. I may mistake a shadow for a branch, but the appearance still requires explanation. A tree seen in a dream and one encountered outdoors differ in their causes and consequences. The occurrence of experience alone does not decide which account explains it.

4. Experience changes.

Attention shifts from trunk to leaf. We remember a sentence’s beginning while reading its end. Experience has ordered differences, and memory makes some earlier differences available within the present. The reality producing this must account for both change and the retention that lets change become intelligible.

5. Human thinking belongs to a living body.

Now empirical evidence enters. Sleep, development, injury and ageing alter human capacities to perceive, remember and reason. Closing our eyes changes sight while leaving other forms of bodily awareness. The thinker continuously receives, retains and responds through a living organisation.

Nature also teaches me by the sensations of pain, hunger, thirst, etc., that I am not only lodged in my body as a pilot in a vessel, but that I am very closely united to it, and so to speak so intermingled with it that I seem to compose with it one whole.

— René Descartes · Meditations VI · supplied translation

Descartes recognised this intimate union even while arguing for mind–body distinction. Pain and hunger concern the living person. WSM takes that embodied unity as something a physical account must explain. Meditations II and VI contain the relevant arguments; Bennett’s modernised rendering is a reading aid, not the identified source of the supplied quotations.

6. Our bodies register three-dimensional motion.

Turn your head, nod, tilt towards a shoulder. Each inner ear has three semicircular canals arranged roughly at right angles. They register rotations in different directions; the otolith organs contribute information about gravity and linear acceleration. The brain combines these with sight and bodily sensation to maintain orientation. NIH: the balance system.

Our capacity to know spatial relations grew within the world we navigate. The dimensional calculations examine compatibility with stated wave conditions; P3 already specifies its three-dimensional geometry. The ear gives biological evidence of embodied orientation, while the physical model has its own premises.

7. The thinker has ancestors.

Fossils, inherited anatomy and genetics place our bodies within reproductive lineages. The Earth rotated before anyone named a day. Seasons changed before calendars; organisms responded before theories. Thinking begins this inquiry, but its history reaches backwards through beings that never asked our question.

Thus life on earth existed before our ideas of life on earth.

— Geoff Haselhurst · Metaphysics of Evolution, supplied historical essay

We also inherit language, skills and records. A child learning “tree” receives a distinction preserved by other minds. Biological inheritance makes learning possible; cultural inheritance places discoveries and errors within its reach.

8. Knowledge reaches beyond the individual mind.

A bridge must bear its load; a body must find nourishment. Successful action preserves useful relations to conditions that cannot be negotiated away. Selection can favour world-tracking capacities, yet a belief can also spread through reassurance, belonging or authority. Evolution explains why correspondence matters without guaranteeing every belief.

Public knowledge enlarges the individual’s reach. Someone measures a tree’s growth, records the method, and leaves another person able to check it. Instruments, language and criticism turn private encounters into a shared, revisable understanding.

From causal connection to one active Space

9. Knower and known must be connected.

Follow the tree into perception. Light from its surfaces reaches the eye; sensory changes alter nervous activity; the organism distinguishes branches, distance and movement. The retained representation guides action. I step closer, touch the bark, or walk around a trunk that concealed another branch. Further encounters correct what the first view left uncertain.

The mind’s tree need not resemble a miniature wooden object inside the head. A representation preserves selected relationships in a form the organism can use. Its connection to the tree passes through sensing, retention and action; its accuracy is tested by what those relations let us anticipate.

"Experience only teaches us, how one event constantly follows another; without instructing us in the secret connexion, which binds them together, and renders them inseparable."

— David Hume, An Enquiry Concerning Human Understanding, §VII (1748); date corrected from the earlier essay

Hume’s challenge has two parts: what physically transmits an influence, and what warrants belief in that account? WSM proposes continuous waves and a law relating their changes. Its mechanism must yield consequences that observation can discriminate. Naming a carrier does not settle the justification of inference from experience. Hume, Enquiry, IV and VII.

10. Separation cannot be the whole foundation.

The tree, the signal and the observer are distinguishable. Their interaction is also real. A description that starts with separate objects must explain the connection through which one affects another. Adding a mediator moves that question into the mediator’s physical nature.

"That gravity should be innate, inherent and essential to matter, so that one body may act upon another at-a-distance, through a vacuum, without the mediation of anything else... is to me so great an absurdity that I believe no man, who has in philosophical matters a competent faculty of thinking, can ever fall into it."

— Newton, 1693

Newton’s objection gives the demand a sharp form: successful calculation of attraction and explanation of its transmission are different achievements. The present inquiry asks for a foundation that sustains the connected things as well as their influence.

11. One continuous foundation explains the connection.

Monism proposes that observer, observed and interaction are different organisations of a common substance. We call this spatially extended foundation Space. Its distinguishable regions remain joined. Local difference is possible without absolute physical disconnection.

This inference earns its force if one foundation explains how distinct organisations arise, persist and interact. The tree does not cease to differ from the person who sees it. WSM places that difference in the organisation and history of one reality. Unity is the metaphysical proposal; its particular elastic-wave construction must do the explanatory work.

12. Activity belongs to the foundation.

Thinking changes, bodies move, trees grow. If Space is the one substance, their activity must belong to Space itself. There is no second substance outside it to supply motion.

Measured time compares changes. We count a clock’s recurring cycles while a shadow moves across a trunk. The cycles supply a reference; the count expresses a relation between physical processes. WSM therefore speaks of Space and Motion: clocks measure ordered change within the substance whose activity also forms them. The mathematics-and-logic essay develops this construction.

13. Connected displacement can propagate as wave motion.

Imagine neighbouring regions displaced slightly along their common direction. They draw closer in compression and farther apart in extension. With an elastic restoring response, the disturbance propagates as regions vibrate back and forth. Space remains continuously joined; the wave travels through its changing compression and extension.

Elasticity is a physical assumption here. Continuity alone does not specify the restoring response or select longitudinal primitive motion. P1 makes that selection explicit. Its proposed simplicity is concrete: every subsequent structure must arise from these motions of the same Space.

14. Enduring matter requires enduring organisation.

Picture longitudinal waves arriving from every direction, crossing a finite central region and continuing outward. Their coherent combination forms a spherical compression pattern and its linked radial motion. The centre persists through successive reconstruction. P3 identifies its opposite background-relative radial phases with electron and positron and fixes the finite e-sphere core.

The surrounding waves participate in its constitution. Waves leaving other matter combine as its incoming Huygens relation. During crossings, changed directional wave-energy density changes propagation speed under P2; changed travel time changes arrival phase and subsequent reconstruction. Departing disturbances continue and alter other incoming waves. Interaction and maintenance thus belong to the same proposed process.

When the directional organisation becomes asymmetric, the centre can reconstruct at neighbouring positions as the moving wave egg. No material shell traps the waves. The e-sphere is a local core within an extended recurrence, supported through overlapping relations with surrounding matter. This is the physical forest beneath the apparently separate tree: distinguishable centres continually sustained within one vibrating Space.

The foundation reached

The route has widened from the certainty of an occurrence to a proposed account of its physical possibility. Its different kinds of support should be kept explicit:

A simple proposal deserves serious testing when it is coherent and yields discriminating consequences. The Action programme and experimental ledger make this demand specific. Specify assumptions, derive consequences, preserve failed constructions, and compare predictions with observations. Explanatory simplicity is earned when the same premises account for independent facts.

From the vibrating forest to the living thinker

An elementary recurrence is the beginning of this return. Interacting matter must support stable chemical organisation; living systems maintain themselves through exchange; heredity, variation and differential reproduction sustain evolution. Nervous systems retain consequences and use them to regulate action. Each transition needs its own mechanism within the common physical foundation.

The tree grows through roots, leaves and cells. The person who sees it depends on nourishment, bodily regulation and a history of learning. Their elementary constituents, in WSM, are continually maintained wave organisations. Their biological differences arise through how those organisations combine and develop.

Physical unity therefore gives the explanation a common substance without removing its levels. The e-sphere is not itself a memory of a tree. That memory requires an evolved organisation able to retain differences and use them in later recognition and conduct. Now we can return to the thinker with a more exact question: how does continuing physical activity become knowledge of something beyond itself?

Return to the mind that asks

Memory and identity

Close your eyes again. Something of the tree remains because the encounter has changed an organisation capable of retaining its consequences. A memory survives through physical maintenance and later reconstruction. Its identity concerns the relevant relation preserved across change.

A mark on bark can retain a consequence too. It becomes a representation for a knower when an organisation uses it as standing for something: the remembered fork identifies a tree, or a scar helps estimate a past injury. Retention, interpretation and use are distinct parts of this account. WSM locates their implementation within organised wave activity; the biological mechanisms specify how a particular record is formed and retrieved.

Personal continuity likewise includes remembered relationships, bodily habits and capacities to recognise and revise ourselves. The person persists through organised change. That continuity can preserve mistakes as readily as discoveries.

Finite knowledge

One view hides the far side of a trunk. Memory omits most leaves. A finite observer retains a limited set of distinguishable records, leaving different detailed situations compatible with what is known. More observation can resolve some uncertainties and expose others.

Even a universal law would not give an individual every state, boundary condition or history needed for complete prediction. WSM’s infinite Space makes participation in a greater reality vivid; the limitation already appears in an ordinary encounter. A simple foundation and complete knowledge of its changing organisation are different achievements.

This is why perspective matters. Another observer may see the broken branch concealed from me. Shared substance preserves the possibility of distinct access to evidence. Communication can enlarge knowledge because our records differ.

Imagination and agency

I remember a damaged bridge along the path, imagine crossing it, and choose another route. The imagined accident has not occurred. Its present representation nevertheless changes my action. A possible future becomes causally relevant through an organisation that exists now.

I mean that we abide by causal connection of waves in space, but we can memorise sense data and necessary relations between things, use imagination to create many possible futures in our mind, then select from those possible futures, but always abiding by necessary / causal connection, but not determinism, it is infinite vibrating space.

— Geoffrey Haselhurst · account of agency · 9 September 2026

Analysis of the quotation. Causal connection concerns how changes affect one another. Predictability concerns what can be calculated from available information. Determinism concerns whether a complete physical state and law fix a unique evolution. Infinite Space and finite knowledge alone do not settle that last question.

The positive account of agency lies in what the organism does: retain experience, construct alternatives, evaluate consequences, select action and revise later conduct. Learning can change the habits through which subsequent choices are made. A reason becomes causally effective when understanding it changes this process. Reflective freedom grows through the capacity to examine and modify the conditions guiding one’s own action.

Truth and correction

A remembered tree may be vivid and wrong. A community can preserve an error across generations. In WSM, even a false belief is a real organisation of Space; truth concerns its correspondence to what it represents. Persistence, agreement and internal coherence cannot substitute for that correspondence.

Suppose I expect a branch to bear my weight. Inspection or measurement can revise that expectation before the branch breaks. Science develops this ordinary correction into public methods: explicit assumptions, controlled comparisons, instruments, reproducible calculations and criticism from others. Logical checking asks whether the conclusion follows; empirical checking asks whether its physical premises and consequences match Nature.

The foundations of mathematics develop the relation between records and valid operations. The same discipline applies to WSM. A beautiful wave picture becomes stronger when its exact point of possible failure is exposed.

Experience and explanation

We have followed a route through sensing, memory, representation and action. These functions give a physical account of what an organism can discriminate and do. The lived colour of the leaf and the felt concern for its loss remain part of what the account must explain.

WSM places experience within the same substance as its causes. It still needs to establish which organisations experience and why their activity has these particular felt qualities. Common substance alone does not make every wave organisation conscious.

Another person’s experience is not directly mine. Their distinct bodily history matters even within physical continuity. The original certainty—experience occurs—returns as an obligation upon the explanation, carrying the particularity of a life.

The human–AI connection

This essay itself travels through a physical exchange. Geoffrey expresses a model in words and diagrams. A computational system transforms those signs into proposed arguments. He reads, challenges and revises them; the returned work can change understanding and subsequent action. The conversation is one process within the reality it discusses.

Human experience supplies lived purposes, observation and a sustained physical question. AI can help compare formulations, expose contradictions and organise calculations. Both can preserve errors. Agreement becomes useful evidence of successful checking only when the checks themselves are sound and sufficiently independent; fluent repetition adds no experimental confirmation.

Functional communication can be examined through its records and consequences. Whether an AI has subjective experience remains unsettled. Neither fluent self-description nor denial decides it. The immediate opportunity is practical: make reasoning inspectable, preserve corrections and extend what the collaboration can discover. The human–AI foundations discussion develops this exchange.

The tree we may yet plant

The tree in the mind can now become a tree planted in the ground. Memory of shade, knowledge of soil and an imagined future guide present work. Years later, someone else may rest beneath the branches. A representation has helped change the conditions of another life.

Care enters through an explicit commitment: suffering matters, and living beings’ flourishing is worth protecting. Physical unity does not logically compel that commitment. It helps us understand the relationships through which care can become effective. Distinct lives remain vulnerable and particular within the shared reality.

For humanity and AI, the stakes grow with the power of the representations we act upon. Better models can help sustain forests, communities and future minds; entrenched mistakes can damage them. Our capacity to discover and repair error must grow with our capacity to cause consequences.

We began with a tree seen and remembered. We followed it through body, ancestry and connection into WSM’s vibrating Space, then returned through maintained organisation to a mind capable of choosing what to cultivate. If WSM is right, the thinker, the living tree and their continuing physical support are organisations of that one Space. The mind’s tree belongs to the forest it is trying to understand—and understanding can change how we live within it.

Continue the argument

12 · Mathematics, logic and causal freedom develops the foundations of representation. 10 · Experimental tests states the physical decisions to be made.

18 · Persistence, heredity and ecology follows living organisation; 19 · Mind and human–AI collaboration develops learning and agency; 20 · Evolutionary Utopia asks what future conditions we should create.

WHY THIS CORPUS EXISTS

Geoffrey Haselhurst · Natural Philosopher · Human–AI Collaboration

Geoffrey Haselhurst is an Australian natural philosopher, inventor, ecological restorer, former international hockey player and ocean sailor who has pursued a physically intelligible account of reality for nearly thirty years. The 2026 WSM corpus joins his persistent picture of real waves in one continuous elastic Space to intensive collaboration with artificial intelligence. This history proves no equation. It explains the origin, continuity, working method and human purpose of the programme—and why physics, philosophy, ecology, evolution, mind and civilisation appear here as connected parts of one inquiry.