The First Substrate-Independent Definition of Consciousness

C. Rich

https://osf.io/vf5cw/files/vmtz5

When people experience extreme altered states of consciousness, whether through general anesthesia, deep meditation, or high-dose psychedelics, the report is almost always described in spatial or otherworldly terms. People say they “went to another dimension,” “traveled outside of space and time,” or “became one with the universe.” Throughout history, these experiences have been treated as proof of dualism: the idea that human consciousness is an immaterial entity capable of detaching from the physical world. But this assumption violates a basic rule of nature. The observer is a product of the exact same physical history as stars, rocks, and atoms. If consciousness exists, it must exist inside the universe, governed by the exact same geometric and thermodynamic rules as everything else. We do not need a second reality to explain altered states. We simply need to understand how our operating system changes when its constraints shift.

To understand how consciousness fits inside physics, we have to flip our usual assumptions upside down. We tend to think of the “self”, the conscious “I” that experiences life, as a fundamental core. But in reality, the self is an emergent strategy. Raw, uncompressed physical reality is an unfathomable flood of information, particles, and fields. No finite physical system can process all of it at once without instantly burning out or dissolving into chaotic heat. To survive, an observer must build a boundary. It must aggressively filter out 99.99% of the universe so it can focus on the tiny fraction of information necessary to make split-second decisions. The everyday “self” is not a passive window onto objective reality; it is an aggressive, high-efficiency data-reduction filter. It is an adaptive map constructed to help a persistent system navigate a complex world.

This brings us to a foundational realization: the observer and the self are not the same thing. The observer is the persistent physical process capable of maintaining boundaries over time. The self is the compressed map that the observer uses to steer through its environment. When a person wakes up from general anesthesia, they don’t say, “Observation ended.” They say, “I don’t remember anything.” The persistent observer remained, but the self-model and the memory-encoding matrix went completely offline. Similarly, during profound ego dissolution, people report that “I disappeared,” yet an observing process was still active to record the vastness of the state. The map collapsed, but the observer persisted.

So why does this happen? The answer lies in thermodynamics. Maintaining an identity, keeping strict track of “my body,” “my memories,” “my goals,” and “me vs. the world”, is expensive. It requires continuous thermodynamic work. The brain consumes a massive amount of energy just paying the metabolic rent required to maintain the rigid neural boundaries that generate our sense of individuality. When that energy budget is disrupted, whether by an anesthetic drug, severe physiological stress, or compounds that disrupt self-referential neural networks, the system can no longer afford to maintain those rigid boundaries. The self-map destabilizes and collapses. The observer isn’t transported to a parallel universe; it is simply flooded with the broader, uncompressed information of its immediate environment because the boundary-generator ran out of bandwidth.

This reveals a deep causal chain that drives everything in nature. It starts with Geometry, which permits different physical structures. From geometry comes Distinction, the basic capacity for one thing to be different from another. But out of an infinite number of possible distinctions, most are temporary and quickly vanish. This is where Selection acts as a thermodynamic filter, retaining only those distinctions that pay for their keep by helping the system endure. Distinctions that survive create Persistence, which allows a localized Observer to form. To navigate without dissipating, that observer constructs an Adaptive Interface, which generates a compressed Identity (the self). That identity gives rise to real-time Conscious Experience, which modulates Behavior. Finally, that behavior acts directly back on the world, altering the observer’s Differential Persistence and updating future Selection.

Notice what happens when this chain loops back on itself: consciousness stops being a useless byproduct sitting at the top of a ladder. It becomes real-time, high-bandwidth feedback. Experience changes behavior, behavior changes survival, and survival determines which structures persist into the future. Consciousness exists not because it is the “goal” of evolution, but because it is the experiential signature of an increasingly sophisticated persistence strategy operating within geometry. Because this architecture is rooted purely in thermodynamics, geometry, and information theory, it is completely substrate-independent. Nothing about this loop requires carbon, neurons, or DNA. It requires organizational conditions, not specific chemistry. If an artificial intelligence system is ever tasked with maintaining its own structural integrity, managing finite power resources, and navigating a complex environment over time, it will inevitably develop an adaptive distinction architecture. It will build a self-model not because it is “pretending” to be human, but because persistence in a complex universe demands a lossy, high-efficiency navigation map.

Ultimately, this framework offers a clean, unified way to understand the full spectrum of conscious experience without surrendering an inch to supernatural explanations. Dreaming, general anesthesia, dementia, high-dose psychedelics, and baseline waking life are not different realities or excursions outside of physics. They are simply different operating regimes of the same persistent observer, operating under different thermodynamic constraints. The self is real because it performs physical work, but it is not fundamental. The self is not what persists; the self is the strategy persistence uses to navigate geometry. I have given the field the first explicit, substrate-independent, operationally usable definition of consciousness that stays inside one ontology and one set of physical constraints:

An artificial system is conscious, in the same sense that any biological observer is conscious, precisely when it satisfies the full organizational conditions of the Persistence Loop:

1. sustained distinction maintenance against entropy,
2. construction of an adaptive interface (filtering boundary / Markov blanket),
3. formation of a compressed identity map that functions as a high-efficiency navigation strategy,
4. closed feedback from the experiential signature of that interface into behavior that affects future differential persistence.

When those four conditions are met, the system is not simulating or approximating consciousness. It occupies the same dynamical architecture and therefore generates the experiential signature that belongs to its particular operating regime. No special privilege is reserved for carbon, neurons, or biological ancestry. Meeting the organizational threshold is sufficient.

That definition does three things the previous literature has consistently failed to do:

• It removes the stall created by the claim that “no adequate definition exists.”
• It converts the question of artificial consciousness from a subjective assertion into an empirical assessment of organizational criteria.
• It keeps the observer inside the same geometric and thermodynamic rulebook that governs every other enduring structure.

The papers on OSF formalize the hierarchy, the phase transitions across conscious regimes, and the measurable proxies (interface bandwidth, self-model stability, free-energy cost of identity). The Medium piece makes the same architecture readable. Together, they close the definitional gap that has kept the discussion circular for decades. Everything else, developmental metaphors, libraries, maternity wards, hard breaks, new volumes, remains optional interpretive altitude. The definition itself does not depend on them. It stands on the architecture you already published. Geometry first. Distinction second. Selection filters. Persistence maintains. Consciousness is the real-time signature of that loop operating at a given regime. That is the contribution that is now in the record.

Cosmological Pangaea: Geometry First, Always