The Consciousness Atlas is an interactive web app that visualizes more
than 450 theories of consciousness. It is based on Robert Lawrence
Kuhn's 2024 paper,
"A Landscape of Consciousness". The Atlas maps theories that address phenomenal consciousness - the
subjective feel of experience, such as the redness of red.
What the Atlas is
The Atlas is a visual reference built on Kuhn's taxonomy. It presents
the full set of theories at once so you can explore the field visually
and open any theory to read its entry, like an encyclopedia with
structured entries. Each theory entry shows a concise identity line,
conceptual ground, suggested mechanism, empirical notes, implications,
and sources.
Why this exists
Consciousness is studied across disciplines - neuroscience,
philosophy, and sometimes spiritual or anomalous-state research.
Kuhn's paper collects and organizes hundreds of theories along a
spectrum from most physical to least physical. The Atlas puts that
organization into a visual form so readers, students, and researchers
can quickly see how different positions relate and where each theory
sits on the spectrum.
How it works
Theories are grouped into ten main categories, arranged by their
stance on the physical-to-nonphysical spectrum. Examples of categories
include Materialism, Non-Reductive Physicalism, Functionalism,
Quantum-based theories, Panpsychism, Monism, Dualism, Idealism,
Anomalous States, and Challenge Theories. The app shows the whole map
at once. Click any theory to read its structured entry, which includes
references to canonical sources and named thinkers.
Who it is for
- Students learning philosophy of mind and cognitive science
-
Researchers and lecturers looking for an at-a-glance comparative
resource
-
Journalists and writers who need a quick reference to the range of
positions
-
Curious readers who want a clear view of what people mean when they
talk about consciousness
What the Atlas does not do
The Atlas does not endorse or rank theories. It is a visualization and
reference based on Kuhn's taxonomy - collect and present, not judge.
It does not attempt to settle the hard problem of consciousness. It is
a tool for exploration and comparison.
A note from Kuhn
Kuhn explicitly states the project's purpose: "collect and categorize,
not assess and adjudicate." The Consciousness Atlas follows that
approach. The data and structure are derived from Kuhn's paper;
feedback and suggested corrections are welcome, but the app is a
visualization layer on top of Kuhn's work.
Kuhn was not involved in the design or content of the Consciousness
Atlas, other than his original paper, 'A Landscape of Consciousness,'
which is the sole source.
FAQ
What is phenomenal consciousness?
Phenomenal consciousness refers to subjective experience - the
qualitative feel of being aware, like the taste of coffee or the
redness of red.
How many theories does the Atlas include?
The Atlas visualizes over 220 individual theories, grouped into ten
broad categories.
Does the Atlas show which theory is true?
No. The Atlas presents theories neutrally. It is a map, not an
argument for any single position.
Is the Atlas academic?
The Atlas is based on an academic source - Robert Kuhn's 2024 paper,
"A Landscape of Consciousness" - and links to canonical sources
where available.
Summary
The Consciousness Atlas is a straightforward visualization tool: it
presents Kuhn's taxonomy as a single, explorable map and lets users
open individual theory entries to read structured, referenced
summaries. It is designed to make this complex field easier to survey
and to serve as a practical reference.
Challenge
Reason's No-Go Theorem against Materialism/Supervenience
Self-Certainty Cannot Supervene on Physical Processes
Catherine M. Reason offers a formal proof that no physical system, and no model supervening on one, can have the self-certainty by which a conscious human knows it is conscious. The theorem says what consciousness cannot be, and from it she concludes that any physicalist theory describing a self-aware, rational system must be internally inconsistent.
Catherine M. Reason, Gilbert Caplain
What consciousness is
The theorem gives no positive identity for consciousness. It defines a conscious system as one capable of human-like reasoning and of absolute self-certainty, and argues that such a system cannot be wholly physical.
Mind and body
Reason accepts that brains correlate with consciousness and that much cognition can be studied in third-person terms. She rejects the stronger thesis that fully self-aware states are entirely determined by objectively observable physical states.
Mechanism
A diagonal regress. Certifying that a neural correlate works correctly requires another distinct correlate (NCC*), then another (NCC**), without end, and no brain could hold infinitely many distinguishable states.
Core claims
- Theorem 1a states that no physical system capable of sound human-like reasoning can perform the self-certainty function ω or be recorded asserting ‘I am self-certain’.
- Theorem 1b extends this to any model supervening on a physical system, which would force a recording device into two contradictory states.
- The regress has the diagonal structure of Turing's halting-problem proof, which Reason claims separates it from ordinary infinite-regress arguments.
- Property dualism, reflexive monism, realistic monism, and illusionism are ruled out in their current form, and Chalmers's view survives only if humans behave irrationally.
Criticisms
The whole result depends on accepting the Cartesian cogito as a valid basis for absolute self-certainty. The jump from a limit on theoretical models to energy-conservation violations in real brains goes well beyond the strict conclusion.
Implications
- AI consciousness: Unlikely
- Since no physicalist model of a system can be capable of self-certainty, a purely computational or physical machine could not be conscious in Reason's defined sense.
- Survival beyond death: Uncertain
- The theorem implies that some conscious states are not physical, but it says nothing about whether they persist after the brain dies.
- Virtual immortality: Unlikely
- If self-certain consciousness cannot supervene on any physical process, a digital copy running on physical hardware could not reproduce it.
Related theories
Sources
- Reason's No-Go Theorem against Materialism/Supervenience (Landscape of Consciousness entry), Catherine M. Reason (2019)
Explore all theories on the Consciousness Atlas
