In my opinion, the central proposition of the Ice-man Inheritance; that "Caucasians crossed the sapien threshold in a glacial environment, and the rigours of this rite of passage traumatized them," p.59 creating the pivot to a uncharacteristic aggressive posture, is a untenable hypothesis, with a simplistic analysis that hopes to resolve the conflict through a process of elimination, where Caucasian and other peoples do not converge. I could argue from this perspective, that Caucasians should be entirely bereft of sunny dispositions by virtue of not crossing the supposed threshold in a warm and sunny climate. Michael Bradley wants it to be that simple. Sadly it is not.