41. In this way, physicalism is still compatible with the conclusion that Mary gains new knowledge. 42. If physicalism is to be defended, the phenomenological features must themselves be given a physical account. 43. Thus, Perry defends a version of type physicalism against three major philosophical arguments for modal argument. 44. Donald Davidson's anomalous monism [ 18 ] is an attempt to formulate such a physicalism . 45. At best, physicalism becomes a form of dualism a dualism of the abstract and concrete. 46. Waismann rejected both the liberalization of empiricism and the epistemological nonfoundationalism of a move from phenomenalism to physicalism . 47. Two common approaches to defining " physicalism " are the theory-based and object-based approaches. 48. Positivism rejected value as lacking cognitive significance, also rejecting the analysis of experience in favor of physicalism . 49. In terms of the various schools of philosophy of mind, mysterianism is a form of nonreductive physicalism . 50. Recently, epiphenomenalism has gained popularity with those struggling to reconcile non-reductive physicalism and mental causation.