I just realized that since I posted two comments that were critical over a minor detail, I should balance it out by mentioning that I liked the post - it was indeed pretty elementary, but it was also clear, and I agree about it being considerably better than The Simple Truth. And I liked the koans - they should be a useful device to the readers who actually bother to answer them.

Also:

Human children over the age of (typically) four, first begin to understand what it means for Sally to lose her marbles - for Sally's beliefs to stop corresponding to reality.

was a cute touch.