“I was interested that the president said he discussed the subject of same-sex marriage with his daughters. Their acceptance of the same-sex parents of some of their classmates was so automatic and total that their very ease convinced him that same-sex marriage was inevitable … Which shows something that anthropologists have known a long time: That innovative behavior comes from children, is passed to their mothers and recognized by their fathers last of all. This rule of innovation holds true throughout the primate world.”