 Some critical challenges to evolutionary psychological accounts of human nature (and the nomological account) derive from similar concerns as those driving criticism of evolutionary psychology in general. In Section 4. we see that discussions of evolutionary psychology are founded on disagreements about how adaptation should be characterized and disagreements about the role of variation in evolution. Some critics charge evolutionary psychologists of assuming that adaptation cannot sustain variation. Buller’s (2005) criticism of evolutionary psychologists’ account of human nature also invokes variation (cf. Hull 1986; and Sober 1980). The idea here is that humans, like all organisms, exhibit a great deal of variation, including morphological, physiological, behavioral and cultural variation (cf. Amundson 2000). Buller argues that the evolutionary psychology account of human nature either ignores or fails to account for all of this variation (c.f. Lewens 2015; Odenbaugh Forthcoming; and Ramsey 2013). Any account that restricts human nature to just those traits we have in common and which also are not subject to change, cannot account for human variation.