Millions of Americans, depressed by the ideological divide in America, harbor a wish that something or someone can bridge this divide. This wish is understandable. But it is fantasy. The divide is unbridgeable. One might as well wish that daily consumption of a hot fudge sundae will lead to weight loss. To cite a few samples: How are we to bridge the gap between those who believe men can become women and women can become men and those who don't believe this? Between those who believe men menstruate and those who believe only women menstruate? How are we to bridge...