There is a carefully buried explanation of the culture-changing use of "drugs" in Humankind's history. One of the better (perhaps even THE best) explanation of this was recently presented in a TED talk by author/researcher Graham Hancock. So shocking and controversial was this information that an anonymous "panel of scientists" demanded that it be removed. Happily for us, the outcry over this censorship meant that the original TED talk has found its way onto YouTube. It is likely that this is one of the most important videos in the Internet these days. Listen to it with an open mind.