Someone would be hard-pressed to imagine something more troubling or macabre than the taboo of eating human flesh. Now, in the animal kingdom, cannibalism is fairly common and found in more than fifteen hundred species, but this activity is rare in humans, just maybe not as rare as you might expect. Once, during a study about difficult passages in the Bible, someone said, “I don’t understand how people can eat another person. God plainly says it is forbidden.” Well, that…