Lankford overgeneralizes individual psychology from limited, fragmentary and doubtful materials, and underplays strategic, ideological, and group dynamical factors. His speculative claims manifest a form of fundamental attribution error: the tendency – especially evident in popular attachment to moral presumptions of individual responsibility and volition – to overestimate effects of personality and underestimate situational effects in explaining social behavior. The book's appeal may owe more to ideological preference than to interests of science or national security.