There have always been more poor people than rich people in any given place at any given time, though rich people would seem to fence themselves off from harm more, eat better, allocate themselves better health care, insure themselves expensively from risk, invoice their burdens on the poor, and live longer. In thousands of years, the population of the long-living rich has never come close to outstripping that of their shorter-life-spanned poor compatriots. Why is this the case?