Have you heard the story of the boy who came home from school on report card day and sheepishly handed his not-so-good marks to his father? The dad studied the document, and color started rising up his face. But before he could say anything, the boy, with an artful shrug of his shoulders and a palms-up gesture of dismay, said:
“Gee, Dad, what do you think it could be, environment or heredity?”