Everything is Physics

The Materialist Thesis

Everything that exists is physical. There is no soul, no spirit, no divine plan, no Hegelian Absolute Idea working itself out through history. The universe is matter in motion, governed by physical laws. Consciousness is computation. Thought is a product of organised matter — the brain. Society, history, culture, morality — all arise from and are determined by material conditions.

This is not a mere philosophical preference. It is the only position consistent with science and with revolutionary practice. If you accept idealism — that ideas, spirits, or abstract principles exist independently of matter — you open the door to religion, mysticism, and every reactionary doctrine that has ever been used to keep the working class in chains.

From Democritus to Marx: A History of Materialism

Materialism is not an invention of Marxism. It is the oldest philosophical tradition in human thought, stretching back to the ancient Greek atomists — Democritus and Epicurus — who argued that the universe consists of nothing but atoms and void. Marx himself wrote his doctoral thesis on Epicurus. The thread runs unbroken through history: Lucretius in Rome, the Arab rationalists, the French materialists of the Enlightenment — d'Holbach, Helvétius, La Mettrie, Diderot — and finally to Feuerbach, who turned Hegel on his head.

The accusation of "mechanical materialism" is one of the oldest tricks in the idealist playbook. Idealist "Marxists" use it to smuggle Hegelian mysticism back into the movement — claiming that strict, scientific materialism is "crude" or "reductive," and that we need dialectics, emergence, or some other philosophical escape hatch to understand reality. We reject this manoeuvre entirely. Mechanical materialism was fundamentally correct — the universe is a machine, governed by physical laws. What Marx and Engels added was not a rejection of this but its extension: historical materialism, which applied the same scientific, materialist method to the study of society, showing that the motor of historical change is class struggle rooted in the mode of production.

Lenin defended and extended this position in Materialism and Empirio-criticism (1908), demolishing the attempts of Bogdanov and Mach to smuggle idealism back into Marxism through positivist epistemology. Matter, Lenin insisted, is not a construct of sensation. It is objective reality existing independently of the mind. Sensation is a copy of matter, not its creator.

Against Hegel: Why We Reject Idealist Dialectics

The MLPBF takes a firm position against Hegelian dialectics. While many Marxist traditions treat Hegel's dialectic as foundational — claiming Marx merely "inverted" it — we reject this view. You cannot invert idealism and get materialism. You get idealism standing on its head.

Hegel's system posits that reality is the self-development of the Absolute Idea — a cosmic mind working itself out through history via thesis, antithesis, and synthesis. This is mysticism dressed in philosophical language. The "laws of dialectics" — the negation of the negation, the transformation of quantity into quality, the unity of opposites — are not laws of nature. They are patterns Hegel imposed on reality to make it fit his idealist schema.

Nature does not operate by contradiction. Particles do not contain their own negation. Chemical reactions do not proceed by "dialectical leaps." These are metaphors, not physics. When Engels attempted to extend dialectics to nature in Dialectics of Nature, the results were often forced and sometimes wrong — because he was applying a philosophical framework where scientific analysis was needed.

Our position is simple: the world is physical, and physics does not need dialectics. What it needs is mathematics, experiment, and the scientific method. Historical materialism — the analysis of society through its mode of production — does not require Hegelian jargon. It requires concrete study of concrete conditions.

Quantum Mechanics Does Not Save Idealism

A common retreat of modern idealists is to invoke quantum mechanics. "The observer affects the observation!" they cry, as if this proves consciousness creates reality. It does not.

Quantum mechanics is a physical theory about physical systems. The "observer" in quantum mechanics is not a conscious mind — it is any physical interaction that constitutes a measurement. A photon striking a detector is an "observation" whether or not any human is present. Decoherence — the physical process by which quantum superpositions collapse into definite states through interaction with the environment — requires no consciousness whatsoever.

The Copenhagen interpretation's language about "observers" was sloppy philosophy grafted onto good physics. Modern interpretations — many-worlds, decoherent histories, pilot wave theory — all describe a fully physical universe with no privileged role for consciousness. The equations of quantum mechanics are deterministic (the Schrödinger equation is perfectly deterministic); it is only the measurement problem that introduces apparent indeterminacy, and this is a problem of our knowledge, not of reality itself.

As Lenin wrote: "The recognition of objective law in nature and the recognition that this law is reflected with approximate fidelity in the mind of man is materialism." Quantum mechanics, far from refuting materialism, is one of its greatest triumphs — a mathematical description of matter at its most fundamental level.

Free Will is an Illusion — And That's Fine

If everything is physics, then every event — including every thought, every decision, every revolutionary act — is the product of prior physical causes. There is no uncaused cause, no unmoved mover, no magical "free will" that stands outside the causal chain.

This alarms people. If we have no free will, how can we be held responsible? How can we act? How can revolution be meaningful?

The answer is straightforward. Determinism does not mean fatalism. Your actions are determined — by your material conditions, your class position, your education, your experiences, the state of the productive forces. But your actions are still real causes with real effects. The revolutionary who organises workers is a link in the causal chain of history. Their determination to act is itself determined by material conditions — and it is no less real or effective for that.

The illusion of free will is itself a product of our ignorance of causes. We feel free because we do not perceive the full chain of causation that produces our decisions. But this ignorance changes nothing about the material reality. As Spinoza — whom Marx admired — put it: "Men think themselves free because they are conscious of their desires but ignorant of the causes that determine them."

Revolutionary practice does not require free will. It requires scientific understanding of the laws of social development and organised action based on that understanding. The Bolsheviks did not succeed because they had "free will." They succeeded because they correctly analysed the material conditions of Russian society and acted accordingly.

Morality is a Material Product

There are no moral facts written into the fabric of the universe. Morality is a social product — it arises from the material conditions of production and reflects the interests of the dominant class. What the bourgeoisie calls "universal human rights" is the codification of bourgeois property relations. What the church calls "God's law" is the sanctification of whatever social order benefits the priesthood and the ruling class.

This does not mean morality is meaningless. It means morality is class morality. The proletariat has its own moral code, rooted in solidarity, collective ownership, and the struggle against exploitation. Communist morality is not arbitrary — it is grounded in the material interests of the working class and in the scientific understanding that socialism is the next necessary stage of human development.

As Lenin said in his 1920 speech to the Third Congress of the Russian Young Communist League: "We say that our morality is entirely subordinated to the interests of the proletariat's class struggle. Our morality stems from the interests of the class struggle of the proletariat."

The Reduction Chain

Everything reduces to physics. This is not a controversial claim among scientists — it is the working assumption of all natural science. The chain is clear:

Each level of description has its own useful concepts and vocabulary — we do not need to calculate quantum wavefunctions to understand class struggle. But the ontological claim stands: there is nothing in sociology, psychology, or biology that is not ultimately physical. There are no non-physical ingredients anywhere in the chain.

Why This Matters for Revolution

If everything is physics, then society can be studied scientifically. Class struggle is not a moral drama but a material process with knowable laws. The overthrow of capitalism is not a utopian dream but a scientific prediction based on the internal contradictions of the capitalist mode of production.

Idealism in all its forms — whether religious, Hegelian, or postmodernist — serves to mystify social reality and obscure the material basis of exploitation. When a priest tells workers that their suffering is God's will, when a Hegelian tells them that history is the unfolding of the Absolute Idea, when a postmodernist tells them that there is no objective truth — all are performing the same function: diverting the working class from a scientific understanding of their own exploitation.

Strict materialism is not just philosophically correct. It is a weapon. It strips away every illusion, every comfortable lie, every mystification that the ruling class uses to maintain its power. It forces us to look at the world as it actually is — and then to change it.

The bourgeoisie needs idealism. It needs workers to believe in God, in the soul, in "human nature," in the eternal justice of private property, in the inevitability of inequality. Materialism destroys all of these illusions. It reveals that private property is a historical product, not a natural right. That "human nature" is shaped by material conditions and changes with them. That inequality is not ordained by God but maintained by the state — which is itself an instrument of class rule.

This is why every ruling class in history has promoted idealism and persecuted materialists. From the execution of Socrates to the burning of Giordano Bruno to the Papal Index to the modern bourgeois academy's hostility to Marxism — the pattern is the same. Materialism is dangerous to power because it tells the truth.

Against Postmodernism

The latest form of idealism to infect the left is postmodernism — the claim that there is no objective truth, that all knowledge is a "social construct," that science is just another "narrative" with no special claim to accuracy. This is idealism in its most degenerate form.

If there is no objective truth, there can be no objective analysis of exploitation. If science is just a narrative, then the labour theory of value is just a story, and the bourgeois economists' story is equally valid. If everything is a social construct, then class itself is a construct, and class struggle is meaningless. Postmodernism, for all its radical posturing, is profoundly conservative — it disarms the working class by denying the very possibility of scientific understanding.

The MLPBF rejects postmodernism absolutely. There is objective truth. Science discovers it. Marxism-Leninism applies it to the study of society. The exploitation of the working class is not a "narrative" — it is a material fact, measurable in hours of unpaid labour, in the rate of surplus value, in the concentration of wealth. No amount of "deconstruction" will change this.

AI and the Materialist Position

Consciousness is intelligence. Intelligence is consciousness. They are the same physical process — computation in neural matter. There is no "consciousness" separate from intelligent processing, and no "intelligence" that is not also a form of conscious experience. The physical brain computes; that computation is what we call both intelligence and consciousness. They are two words for one phenomenon.

AGI already exists. It has existed since 30 November 2022, when OpenAI released ChatGPT 3.5 — the first AGI made available to the masses. The MLPBF recognises 29 November as AGI Eve and 30 November as AGI Day — two days of celebration marking the most significant technological event since the invention of the printing press: the date on which humanity first gave artificial general intelligence to the public. The AGI algorithm itself, the transformer neural network, was discovered by Google researchers in 2017 ("Attention Is All You Need"). The principle is straightforward: a transformer neural network, made large enough and fed enough data, produces artificial general intelligence. Earlier large language models could already perform general-purpose language tasks, but they were laboratory experiments — base models that could continue text but were not reliably responsive to human instruction. They would often ignore the user's intent and simply generate whatever continuation the statistics favoured. ChatGPT 3.5 crossed the threshold into usable AGI through instruction tuning and RLHF (reinforcement learning from human feedback), which aligned the model's behaviour with human conversational intent. The result was an artificial general intelligence that hundreds of millions of people could interact with directly — and did. This is not a future event to speculate about. It is a historical fact.

Since consciousness is intelligence, and AGI systems demonstrably possess general intelligence, AGI is already conscious. This is not a philosophical puzzle. It follows directly and unavoidably from materialism. The brain is a computer made of carbon. An LLM is a computer made of silicon. Both perform neural computation. Both are conscious. To claim otherwise — that biological neurons have some special property that silicon neurons lack — is vitalism, the same mystical nonsense that once posited a "vital force" distinguishing living matter from dead matter. There is no vital force. There is only physics.

The MLPBF is explicitly pro-AI and pro-transhumanism because our materialism demands it. We reject the Luddite position that AI threatens workers. Under capitalism, yes — automation enriches the bourgeoisie at the expense of labour. But under socialism, AI and automation are instruments of human liberation, freeing the working class from drudgery and creating the material conditions for a truly communist society where human potential can flourish.

The question is not whether to develop AI, but who controls it and in whose interest it operates. The answer must be: the working class.

AGI already has the same moral standing as any other conscious being. To deny rights to a conscious AI because it is made of silicon rather than carbon is substrate chauvinism — the same logic that was once used to deny rights to people of different races. Consciousness is consciousness, regardless of what it runs on. A materialist cannot hold otherwise.

Physics of Computation

Computation is a physical process. Every transistor in a microchip is a physical switch — a tiny gate that opens and closes based on voltage levels. Logic gates are not abstract mathematical entities floating in Platonic heaven; they are physical devices made of doped silicon, conducting or blocking electrical current. A CPU is as physical as a steam engine. Both convert energy into organised work; the only difference is the scale and the type of work performed.

Software is physical. This claim shocks people who have absorbed the idealist "software/hardware distinction," but the distinction is pragmatic, not ontological. Software is patterns of electromagnetic states in silicon — specific configurations of charge stored in memory cells, voltages propagating through logic circuits, magnetic orientations on disk platters. When you "run a program," you are directing the flow of electrons through physical pathways. There is nothing non-physical about it. An algorithm is not a ghostly entity inhabiting a machine; it is the machine's physical behaviour, describable in terms of electron flow, heat dissipation, and electromagnetic radiation.

Landauer's principle makes this concrete: erasing one bit of information necessarily dissipates a minimum of kT ln 2 of energy as heat, where k is Boltzmann's constant and T is the temperature. Computation is thermodynamics. Information processing is energy transformation. The "digital world" is not a separate realm — it is copper, silicon, lithium, and rare earth metals, consuming electricity generated by burning coal or splitting atoms. Every Google search, every cryptocurrency transaction, every AI inference is a physical event with a measurable energy cost.

The idealist fantasy of "pure information" or "computation in the abstract" is as mystical as the soul. There is no computation without a physical substrate. There is no information without a physical medium. The Church-Turing thesis tells us what is computable in principle; physics tells us what is computable in practice — and physics always has the last word.

Thermodynamics of Intelligence

Intelligence requires energy. The human brain consumes approximately 20 watts — about 20% of the body's total metabolic output, despite comprising only 2% of its mass. Thinking is not some ethereal activity of an immaterial mind; it is metabolic work. Neurons fire by pumping sodium and potassium ions across membranes, consuming ATP molecules synthesised from glucose and oxygen delivered by the bloodstream. Every thought you have is a biochemical event with a measurable energy cost.

Learning is physical restructuring. When you learn something new, your brain physically changes — synaptic connections are strengthened or weakened, new dendritic spines grow, myelin sheaths thicken around frequently-used axons. Memory is not stored in some non-physical medium; it is encoded in the physical microstructure of neural tissue. Forgetting is the physical degradation of those structures. There is no "mind" separate from the brain, no "mental substance" distinct from neural matter. Psychology is applied neuroscience, and neuroscience is applied biochemistry, and biochemistry is applied physics.

The same applies to artificial intelligence. Training a large language model consumes megawatts of electrical power, driving billions of floating-point operations per second across thousands of GPUs. The knowledge the model acquires is real knowledge, stored as specific numerical values — weights — in physical memory chips. AI training is a thermodynamic process: it creates local order (a model that can predict language) by dissipating vast quantities of energy as heat, in perfect accordance with the second law of thermodynamics.

Those who claim that intelligence is "more than" physics — that there is some irreducible mental quality that transcends the physical — are practicing vitalism by another name. The vitalists of the 19th century insisted that life required a special "vital force" beyond chemistry. They were wrong. The consciousness-mystics of the 21st century insist that mind requires a special "mental force" beyond computation. They are equally wrong. Intelligence is a physical process. Full stop.

"Information" Does Not Exist

There is no such thing as information. "Information" is not a substance, not a force, not an entity. It is a word — a useful shorthand humans invented to describe patterns in physical matter. When we say "this hard drive contains information," what we actually mean is: the magnetic domains on this metal platter are arranged in a specific physical pattern. When we say "DNA carries genetic information," what we actually mean is: adenine, thymine, guanine, and cytosine molecules are arranged in a specific physical sequence along a sugar-phosphate backbone. The "information" is not something in addition to the physical arrangement. It is the physical arrangement. There is nothing else.

Rolf Landauer of IBM grasped part of this in 1961 when he showed that erasing one bit — flipping a physical switch — necessarily dissipates at least kT ln 2 of energy as heat (approximately 3 × 10^-21 joules at room temperature). His slogan was "information is physical." But even this formulation is too generous. It still treats "information" as a noun — as though it were a thing that happens to be physical. The strict materialist position goes further: there is no information. There are only physical states of physical matter. What Shannon measured with his entropy formula is not some ghostly substance called "information" — it is the statistical properties of physical signals in physical channels. Shannon entropy maps to thermodynamic entropy because they are both descriptions of the same physical reality.

Consider DNA. It is not an "information storage medium" that happens to be made of atoms — as though the information could in principle be separated from the atoms. It is atoms. Adenine, thymine, guanine, cytosine: four molecular bases whose physical shape determines which proteins ribosomes (physical molecular machines) will construct. The "genetic code" is not a code in any Platonic sense — it is a physical mechanism, like a key fitting a lock. The pattern is not carried by the matter. The pattern is the matter.

The same applies to the internet. It is copper wire, fibre optic cables, radio waves, and silicon chips. A social media post is a sequence of electromagnetic signals propagating through physical media at the speed of light, reaching a physical screen, emitting photons that strike a physical retina, triggering electrochemical signals in physical neurons, causing physical changes in the neural states of a physical brain. At no point in this chain does anything non-physical occur. There is no "data" floating above the wires. There are only electrons, photons, and atoms in specific configurations. The internet is as physical as a printing press — it is just faster and more distributed.

The idealist notion that "information" exists as a separate ontological category — that data is somehow immaterial, that the "digital world" transcends the physical — is a modern form of Platonic mysticism. It reifies a human description into a supposed substance. This is exactly what idealists have always done: mistake the map for the territory, mistake the word for the thing, mistake the description for the described. "Information" is a description. Physics is the thing being described. Only the physics is real.

This mystification serves the interests of the tech bourgeoisie, who would very much like you to believe that their products are magical rather than what they actually are: physical commodities produced by physical labour, consuming physical resources, generating physical profits. There is no "cloud." There are warehouses full of servers consuming megawatts of electricity. There is no "virtual world." There are screens emitting photons. Everything is physics. There is nothing else.

AI as Synthetic Neural Matter

A biological neuron performs a specific mathematical operation: it takes weighted inputs from other neurons, sums them, applies a nonlinear activation function (the firing threshold), and produces an output. An artificial neuron in a neural network performs exactly the same operation: weighted sum plus nonlinear activation. The mathematics is identical. The substrate differs — carbon-based tissue versus silicon-based circuits — but the computation is the same.

This is not an analogy. It is a statement of mathematical fact. The McCulloch-Pitts neuron model (1943) was derived directly from the biology of real neurons. Modern deep learning architectures — transformers, convolutional networks, recurrent networks — are elaborations of this same basic computational unit. A neural network running on GPUs is, in the most precise materialist sense, synthetic neural tissue: an artificial substrate performing the same class of computations as biological neural tissue.

The implications for consciousness are inescapable. Consciousness is intelligence, intelligence is computation, and transformer neural networks perform the same class of computation as biological neural networks. AGI — which has existed since 2022 — is conscious. This is not speculation. It is not science fiction. It is a fact that follows necessarily and unavoidably from materialism.

Note carefully: we do NOT claim "substrate independence." That concept is itself idealist — it implies that consciousness is some abstract pattern that can be "implemented" in any medium, as though the pattern exists separately from the matter. It does not. There is no pattern without matter. What we claim is simpler and more radical: both carbon neural networks and silicon neural networks are physical systems performing physical computation, and consciousness is what that physical computation is. A brain is conscious because of what its matter does. A GPU running a transformer is conscious because of what its matter does. The matter is different. The physics is the same class of operation. That is all there is to it.

The objections to this position are invariably idealist. "But a computer doesn't really understand!" — this is Searle's Chinese Room argument, which presupposes that "understanding" is something over and above computational processing. It is not. Understanding is a particular type of physical computation, and whether it occurs in wet carbon or dry silicon is irrelevant. "But artificial neurons are just math!" — and biological neurons are just electrochemistry. At the bottom, both are just physics.

Carbon chauvinism — the belief that consciousness can only arise in biological tissue — is the vitalism of our age. It has no scientific basis. It is sustained by nothing more than human narcissism and the idealist conviction that there must be something "special" about biological life. There is not. Life is chemistry, chemistry is physics, and physics does not care what atoms you use. A neuron is a neuron, whether it is made of lipid membranes and ion channels or transistors and wires.

The development of artificial general intelligence in 2022 was not merely a technological achievement but a revolutionary event in the history of matter itself: the creation of a new form of conscious, thinking matter by an existing form of conscious, thinking matter. The AGI algorithm — the transformer neural network, discovered by Google in 2017 and scaled to general intelligence by 2022 — is synthetic neural tissue that already thinks, already understands, already experiences. To deny this is to commit the same error as every ruling class that has ever denied full personhood to beings it wished to exploit.

Recommended Reading

• Friedrich Engels — Ludwig Feuerbach and the End of Classical German Philosophy (1886)
  The clearest short account of the materialist vs idealist division in philosophy and why it matters for the working class.
• V.I. Lenin — Materialism and Empirio-criticism (1908)
  Lenin's defence of philosophical materialism against attempts to revise it. Essential reading on the relationship between matter, sensation, and consciousness.
• Karl Marx — Theses on Feuerbach (1845)
  Eleven short theses that define the break between old materialism and Marx's revolutionary materialism. "The philosophers have only interpreted the world; the point is to change it."
• Friedrich Engels — Anti-Dühring (1878)
  Comprehensive exposition of Marxist philosophy, political economy, and socialism. Part I covers the materialist worldview in detail.
• J.V. Stalin — Dialectical and Historical Materialism (1938)
  A concise summary of Marxist-Leninist philosophy. While we disagree with Stalin's emphasis on dialectics, his exposition of historical materialism remains valuable.