Last week on IAI News, Peter Vickers gave his own view on the debate between Philip Goff and Bernardo Kastrup concerning panpsychism and idealism, questioning the role of scientific evidence in this metaphysical debate. But his arguments miss the point of the endeavor and rely on a majoritarian view of scientific truth, argues Bernardo Kastrup.
The thrust of Vickers' piece, “Panpsychism, idealism and science,” is an argument about whether theories of mind such as panpsychism and idealism can be considered scientific. He suggests they cannot. The very question, however, already betrays some conceptual confusion regarding the definitional differences between science and philosophy, particularly metaphysics: insofar as a theory of mind is a metaphysics, of course it is not scientific; by definition. It can therefore be argued that the very motivation for his piece is a straw man.
Science studies nature's behavior, insofar as it can be ascertained through empirical experimentation. Metaphysics, on the other hand, although certainly informed by science, makes tentative statements about what nature is. Theories of mind like panpsychism and idealism are metaphysical theories, in that they maintain that mind is a fundamental part of what nature is.
One could argue that, because of its speculative character, we should refrain from metaphysics altogether and focus solely on what science can ascertain about nature's behavior. This is perfectly fine, but it implies that we have to abandon mainstream physicalism as well, for physicalism is a metaphysics; it makes statements about what nature is—namely, entities outside and independent of mind, which can be exhaustively described purely in terms of quantities. Vickers seems to lose sight of this when he says that panpsychism and idealism
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