 Hitchcock and Sober (2004) consider a hypothetical example involving two scientists, Penny Predictor and Annie Accommodator. Working independently, they acquire the same set of data D—Penny proposes theory Tp while Annie proposes Ta. The critical difference however was that Penny proposed Tp on the basis of an initial segment of the data D1—thereafter she predicted the remaining data D2 to a high degree of accuracy \((D = D1 \cup D2)\). Annie however was in possession of all the data in D prior to proposing Ta and in proposing this theory accommodated D. Hitchcock and Sober ask whether there might be reason to suspect that Penny’s theory will be more predictively accurate in the future, and in this precise sense be better confirmed. 