 Acceptance has both an epistemic and a pragmatic component. When one accepts a theory, one has a belief, and also a commitment. The belief is that the theory is empirically adequate. The commitment is “a commitment to the further confrontation of new phenomena within the framework of that theory, a commitment to a research programme, and a wager that all relevant phenomena can be accounted for without giving up that theory” (1980, 88). According to the constructive empiricist, this commitment is made at least in part on pragmatic grounds: there is an important role for non-epistemic values in theory choice (van Fraassen 2007, 340).