To my three-and-four-year-old children, superheros were as real as Charlotte the spider who lived on the back porch, and I was not permitted to sweep her web away in case she wanted to write a message. The Easter Bunny lived in the neighborhood—my children had seen him. Sure enough, Gilligan was going to teach my children boating skills—as soon as he got off the island. And Mr. Rogers certainly would bring Lady Elaine and Daniel for a visit soon. …