Shamanism is just show business and philosophy is just a branch of that vaudevillian impulse.
And what is shamanism but philosophy with a hands-on attitude. Philosophy not made around the camp fire, but philosophy based on the acquisition of extreme experience. That's how you figure out what the world is, not by bicycling around in the burbs, but by forcing extreme experience.
Sometime in the last 50,000 years, before 12,000 years ago, a kind of paradise came into existence. A situation in which men and women, parents and children, people and animals, human institutions and the land all were in dynamic balance and not in any primitive sense at all. Language was fully developed, poetry may have been at its climax, dance, magic, poetics, altruism, philosophy. There's no reason to think that these things were not practiced as adroitly as we practice them today and it was under the boundary dissolving influence of psilocybin.
Perhaps, you know, new laws, new domains of potential openness are occurring as the universe ages, and complexity previously disallowed is now possible, and we are that complexity. We are nature moving out of its genetic phase - a phase under the control of chemical genes, which are physical structures, in to an epigenetic phase, a phase of culture ruled by codes, transformable culturally confined codes - mathematics, religion, philosophy, art, dance, humor.