"Everybody's a Little Racist," goes a popular Broadway song, and this is indeed true. Prejudice is entirely normal, just as the tendency to eat far more food than we need is entirely normal. If these traits had not promoted the survival of our not-so-distant ancestors, they would not have been passed down to us. This does not make evolution an excuse for either trait because both are counterproductive today. We can and should unlearn them, and it is easier to unlearn prejudice than it is to unlearn overeating. We know today that a diet high in saturated fats, along with obesity, increases our risks for cardiovascular disease, cancer, and diabetes. Why, then, are the appearance and aroma of a marbled juicy steak so appealing to anybody who has not deliberately unlearned, as I did when I got an unfavorable cholesterol test many years ago, our taste for red meat? Why are we programmed genetically to eat something that will shorten our lives? The reason is that, except...(Read Full Article)