   Finally, the focus on optimality modeling in connection to adaptationism has led to a precise statement of how the nature of fit between data and the predictions of an optimality model influence the degree of evidentiary support for the adaptive hypothesis (Orzack and Sober 1994a, b). Qualitative agreement by itself is not sufficient to accept the hypothesis of local optimality. Instead, quantitative agreement and an assessment of nature of possible between-individual heterogeneity of fit to model predictions are required in order to have evidence for optimality; without both of these test components, acceptance of the hypothesis of optimality is not warranted (see above).