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I recently started re-reading a favorite book called What Is the Name of This Book - The Riddle of Dracula and Other Logical Puzzles by Raymond Smullyan. Mr. Smullyan is/was (I think he's dead, but I'm not sure) a professor of mathematical logic. In this and his other books he smoothly leads the reader through the tenets of logic, starting with the most basic concepts and working all the way up to and through meta-logic and topics such as Gödel's Incompleteness Theorem. What's interesting is that he does so in an interesting and entertaining way. As an example, the following are some of the puzzles (and their answers behind the cut-tag) from the 2nd chapter.

1. A man was looking at a portrait. Someone asked him, "Whose picture are you looking at?" He replied: "Brothers and sisters have I none, but this man's father is my father's son." ("This man's father" means, of course, the father of the man in the picture.) Whose picture was he looking at?
   
2. A man is 100 yards due south of a bear. He walks 100 yards due east, then faces due north, fires his gun due north, and hits the bear. What color was the bear?
   
3. If an airplane crashes right on the border of the United States and Canada, in which country would you bury the survivors?

Try and get the answers before looking behind the tag.

( Answers & Explanations )

So how'd you do? And would anyone like me to post more logic puzzles from the book?

Wanna see my slideshow pictures?

Hello again! I've got the photos back from the past couple of events I've attended (Ft. Worth Gay Pride Parade & FW Gay Pride Picnic) and I'm getting them loaded and resized for your viewing pleasure. While that's being taken care of, here are 3 pics of me from said events:

( Here there be pictures )