   Evolutionary hypotheses make a variety of commitments about development, ecology, genetics, and history. As a result, an adaptive hypothesis makes contact with evolutionary history only in conjunction with a number of auxiliary hypotheses. The most convincing case for an adaptive hypothesis will include a variety of evidence, especially independent data that confirm the different facets of an evolutionary hypothesis (Lloyd 1988). Sober's (2008) analysis of a testing protocol for evolutionary hypotheses makes clear the role of auxiliary hypotheses and assesses the evidentiary import of different observed outcomes. He provides an analysis of whether and how fit between an optimality model and the observed population mean favors natural selection over genetic drift.