Comparison
Illusionism vs Panpsychism
Illusionism and panpsychism start from the same diagnosis and draw opposite conclusions. Both agree that standard physical science cannot explain phenomenal consciousness, the felt, qualitative character of experience, as it appears from the inside. Illusionists conclude that the appearance is mistaken. Panpsychists conclude that physics is incomplete.
Illusionism, defended by Keith Frankish and before him Daniel Dennett, holds that experience happens but qualia do not exist. Introspection gives us a simplified model of the brain’s own states, and that model misrepresents them as having ineffable inner qualities. Dennett compared this to a computer’s desktop, a user illusion that hides complex machinery. The job for science becomes what Frankish calls the illusion problem, explaining why brains are so convinced they have qualia.
Panpsychism, defended by Philip Goff, Galen Strawson and David Chalmers, takes those qualities at face value. Physics describes only what matter does, so its intrinsic nature may be experiential, and consciousness would then be present in the basic constituents of the world from the start.
Each side regards the other’s central claim as its weakness. Strawson has called the denial of consciousness the silliest claim ever made, since the existence of experience is the one thing we cannot be wrong about. Illusionists reply that introspection can mislead like any other sense, and that panpsychism keeps qualia at the cost of the combination problem and a claim no experiment can check. Goff and Frankish have argued the point at length, including on Mind Chat, the series they host together.
Common ground. Both agree that qualia as they appear cannot be reduced to brain processes, and both treat the hard problem as the central puzzle. They split on which side of it gives way. Both must also answer Chalmers’s meta-problem, why we judge that there is a hard problem at all.
Key differences
| Eliminative/Illusionism | Panpsychism | |
|---|---|---|
| Status of qualia | Qualia do not exist. Introspection represents brain states as having felt qualities they lack. | Qualia are real and fundamental, present in simple form in the basic constituents of matter. |
| What is fundamental | Ordinary physical stuff as physics describes it, with nothing experiential added. | Physical entities whose intrinsic nature is experiential or proto-experiential. |
| Main objection | An illusion of experience seems to be an experience itself, as John Searle and Galen Strawson argue. | The combination problem. Nobody has shown how micro-experiences add up to a unified human mind. |
| Research program | The illusion problem. Use neuroscience and psychology to explain why brains represent themselves as having qualia. | Mainly philosophical. Solve the combination problem and show how experience fits within physics. |
| AI consciousness | Possible. A machine with the right functional organization would be conscious in the only sense illusionists accept. | Open. AI hardware shares matter’s basic properties, and whether they combine into a subject is unresolved. |
On the big questions
| Eliminative/Illusionism | Panpsychism | |
|---|---|---|
| AI consciousness | Yes or likely 2 Possible or depends 3 Uncertain 2 | Yes or likely 8 Possible or depends 6 Uncertain 3 |
| Life after death | Unlikely or no 10 | Yes or likely 2 Possible or depends 3 Uncertain 1 Unlikely or no 9 |
| Mind uploading | Possible or depends 1 Uncertain 3 | Yes or likely 7 Possible or depends 3 Uncertain 2 Unlikely or no 1 |
| Meaning and purpose | Humanistic only 8 Uncertain 1 | Cosmic or ultimate 4 Uncertain 9 |
Eliminative/Illusionism
Eliminativists and illusionists hold that the private, felt qualities of experience, often called qualia, are not real features of the world. The brain represents itself as having them, and that representation is what science must explain.
Panpsychism
Consciousness is a basic feature of the physical world. The fundamental particles and fields of physics have experiential, or proto-experiential, properties, and in brains these combine into the full awareness of a human or animal.