Now and again someone recommends a business book to me since I seem to have found myself running a business. Invariably, I quickly realize the author has a 5 page idea based solely on his intuition, no real data, and an extra 200 pages of filler so it can be sold in bookstores. But for the first time I can remember, I've been reading a business-oriented book with a substantial, interesting thesis and I think it might apply to education as well.
Transitional fossils offer tangible evidence of evolution. Examples include