[Skybird]

P.S. The best passing on of knowledge is - from mouth to ear, from generation to generation. Some religious cults are especially good at this, and as a result are hard to be penetreated or to be wiped out. But mastering arts of craftsmanship, and hand the knowledge from father to son: is the way to go. Plus it adds the bonus of passing on not just theoretic knowledge, but practial experience as well. Which often makes all the difference.