Argument against the conceivability (1) According to verificationism(证实主义),a( declarative sentence is meaningful just in case its truth value can be verified This entails that unverifiable sentences are literally meaningless so that no metaphysical claim according to which unobservable nonphysical items exist can be true. However, since our ability to think and talk about our experiences is itself a problem for verificationism, to presuppose it when attacking the zombie idea would beg the question Or in another way, "Zombies are conceivable" is meaningless because the very statement cannot be verified• According to verificationism (证实主义), a (declarative) sentence is meaningful just in case its truth value can be verified. This entails that unverifiable sentences are literally meaningless, so that no metaphysical claim according to which unobservable nonphysical items exist can be true. However, since our ability to think and talk about our experiences is itself a problem for verificationism, to presuppose it when attacking the zombie idea would beg the question. • Or in another way, “Zombies are conceivable” is meaningless because the very statement cannot be verified