Consider what would happen to a person who knows nothing at all about each of the following tasks, and tries to learn them by trial and error: brain surgery, driving a bus, fl ying an airplane,...

Consider what would happen to a person who knows nothing at all about each of the following tasks, and tries to learn them by trial and error: brain surgery, driving a bus, fl ying an airplane, acupuncture, defusing a bomb, being a parent. (On second thought, perhaps that last example does support Skinner …)