The decision to press either the right or left switch certainly reflects the person’s choice. Yet it isn’t a free choice. In fact, our belief in free will results from faulty logic. When a biochemical chain reaction makes me desire to press the right switch, I feel that I really want to press the right switch. And this is true. I really do want to press it. Yet people erroneously jump to the conclusion that if I want to press it, I choose to want to.

