Problem
Superstitious behavior is incredibly common. You may have your own superstition (e.g., a lucky pencil for taking an exam) or you may know of someone who is superstitious (this is particularly common amongst professional athletes and performers). Describe a superstition you know of, and answer these questions: What do superstitious behaviors and compulsions have in common? How are they different? Why don't they extinguish? How do "popular" superstitions spread to many people?