In a recent discussion over at SoulSprawl, I encountered the following remark:
…solipsism is meaningless, not false, because there is no difference that we can know of, even in principle, that would tell apart a solipsist from a non-solipsist world.
The same goes for the doctrine of physicalism. To date, all definitions of physicalism I’ve seen lead to meaningless philosophical gibberish. There is nothing, even in principle, that could reliably differentiate between a physical and non-physical cause. If you agree, please affirm. If you disagree, state a precise definition of physicalism and we’ll go from there.