Intellectual isolationism is idiocy: Just say no to fences in the brain

Last weekend, I was taking a walk with my spouse, Gisèle. As we passed our neighbor’s house, a large, attractively tawny dog ran towards us barking. But the dog did not come all the way to us, stopping several yards from the street. Gisèle told me the dog had been trained with a so-called invisible fence in which moving past a line triggers […]