László and Klara Polgár, a Hungarian couple, wanted what most parents want: Success for their children. László and Klara, however, did not just hope for success, they deliberately built it. They began planning their children’s development at the start of their courtship. László, a psychologist, sought a wife who would help him test his theory that anyone could be turned into a genius with the right upbringing. László and Klara didn’t speak about success in general terms; they had an exact idea of what their unborn children would do. Boy or girl, each child would be built into a grandmaster chess player. This romantic scheming probably wouldn’t appeal to most, but it did ask two all-important questions: Where do experts come from? Are they born or built?