Questions, comments, suggestions and links are welcome (as are brainteasers, puzzles, games, and your thoughts on logic, skeptical thinking, etc.) but you may not always get a personal response. You're most likely to get a reply if you mention what you're ultimately trying to accomplish, or if you have a testable hypothesis. All submissions should be accompanied by specific permission for the professor to use and distribute it. Reliable information concerning the source of unattributed quotes, humor or anything else is also welcome.