 The philosopher of biology, David Hull, argued in his (1988) that because the overall structure of reward and punishment in the sciences is a powerful incentive not to cheat, further epistemological analysis of the sciences is unnecessary. What scientists have to lose is their reputation, which is crucial to their access to grants, collaborations, prizes, etc. So the structure itself guarantees the veridicality of research reports. But some celebrated recent episodes, such as the purported production of “cold fusion” were characterized by the failure of replication attempts to produce the same phenomenon. And, while the advocates of cold fusion were convinced that their experiments had produced the phenomenon, there have also been cases of outright fraud. Thus, even if the structure of reward and punishment is an incentive not to cheat, it does not guarantee the veridicality of every research report.