 The collapse challenge asserts that any purportedly strongly emergent powers would “collapse” into—that is, end up being associated with—their dependence bases. One might seek to block collapse by distinguishing between collective dispositions for producing certain powers and the powers themselves, or between direct and indirect having of powers; or by characterizing emergent powers as relative to specified sets of fundamental interactions (see O’Connor 1994: 98–99, and 2000, Ch.6, Wilson 2002, and Baysan &amp; Wilson 2017). Two other reasons for resisting attempts to interpret (possible) discontinuous microphysical behavior in terms of micro-physical powers alone are epistemological. One might contend that we should seek to provide as unified an explanation as possible of such phenomena, and that an explanation in micro-physical terms alone would be highly complex and disunified compared to one that posits a family of emergent macroscopic determinables fitted to structures of organized complexity. Second, we can describe certain possible situations involving causal indeterminism that would be readily understandable in strong emergentist terms, whereas the only microphysical explanation possible would require an objectionable action at a temporal distance. (See O’Connor &amp; Wong 2005 for development of these replies.)