 Sesardic’s recent work is a criticism of those who invoke Lewontin-style arguments against heritability analyses. He argues in favor of hereditarianism by attacking its critics. He summarizes his complaint as follows: “For some reason in [the heritability] debate philosophers have displayed a surprising lack of intellectual curiosity and analytical acuity” (2005, 9). This is because “they hastily accepted anti-hereditarian arguments that possessed only superficial plausibility” and “are often poorly informed about basic scientific facts in the very domain of their explorations” (2005, 9). Sesardic’s criticism is polemical and does not introduce any new techniques in heritability analysis to the philosophical audience. Rather, he relies on a recapitulation of earlier views, such as those of Jensen, one of the original targets of Lewontin’s critique. There are several spirited responses to Sesardic’s book (Tabery’s 2006 and 2009b reviews are examples) and Gri Oftedal (2005) presents a clarification of the issues at stake between Sesardic and Lewontin.