“it is easy to recognize an evolutionary process at work that has molded the human form for better survival in an arctic environment. Populations that live at high altitudes, like Tibetans, represent another adaptation to extreme environments; in this case, the changes in blood cell regulation are less visible but have been identified genetically. The adaptation of Jews to capitalism is another such evolutionary process, though harder to recognize because the niche to which Jews are adapted is one that has required a behavioral change, not a physical one.”