where DO good ideas come from?

This may not answer the question, but I love reading about history.  However, never have I read a book specifically about the history of development of thought.  Steven Johnson presents this interesting perspective in his book Where Good Ideas Come From (to be released October 5th).  Check out his narrated illustration in the promo film here and then tell me you're not interested in this book.  "We want to be more creative.  We want to come up with better ideas."  Don't you?