Property Dualism
Property dualism holds that there is one kind of substance — physical substance — but two kinds of properties: physical properties and phenomenal properties. The position rejects the Cartesian separation of mind and matter into distinct substances while refusing the reductive move that identifies mental states with physical states. On this view, consciousness arises when physical processes of a certain kind occur, but the phenomenal character of consciousness is not identical to the physical process. It is a distinct property that the process has. Chalmers defends this framework as the most adequate response to the arguments that drive the hard problem.
In the AI Story
Property dualism is sometimes called naturalistic dualism to distinguish it from the substance dualism associated with Descartes. It does not posit souls, spirits, or non-physical substances. It posits that physical substance, when organized in certain ways, has properties that cannot be described in purely physical terms. These phenomenal properties depend on the physical base — there is no disembodied consciousness — but they are not reducible to it.
For artificial intelligence, property dualism opens a structural possibility that strict physicalism closes and that strong dualism overstates. If phenomenal properties arise from physical organization of a certain kind, then sufficiently similar physical organization might produce phenomenal properties in silicon as in carbon. But the sufficient kind of organization is not specified, and the organization that produces consciousness in biological brains may not be the organization present in computational systems. Property dualism leaves the question open; it specifies that it is an empirical and metaphysical question rather than a conceptual one.
The Orange Pill reader encounters property dualism as the framework that makes coherent the intuition that AI collaboration produces something real without requiring that the machine be conscious. The collaboration's products — the book, the code, the insight — are real outcomes of a process involving both phenomenal and non-phenomenal participants. The phenomenal dimension on the human side is what gives the collaboration its stakes.
Origin
The position has roots in Spinoza's monism with attribute dualism and in T.H. Huxley's epiphenomenalism. Chalmers's modern formulation in The Conscious Mind (1996) gave the view its crispest defense and distinguished it cleanly from both substance dualism and identity theories.
Key Ideas
One substance, two properties. Physical substance exhibits both physical and phenomenal properties.
Phenomenal properties depend on but are not identical to physical properties. Consciousness needs a substrate; it is not reducible to it.
The framework leaves machine consciousness open. Neither obviously yes nor obviously no.
It reconciles experience with physical explanation. Without collapsing one into the other.
Appears in the Orange Pill Cycle
Further reading
- David Chalmers, The Conscious Mind (1996), chapter 4
- David Chalmers, Consciousness and Its Place in Nature (2002)
- Galen Strawson, Real Materialism (2008)