The "just say no" campaign at this point is a lot like drawing sea-monsters over certain unexplored areas of the map and expecting people to stay away. It may work for some, but explorers live for this kind of thing.
Terence McKennaAt still higher doses psilocybin triggers this activity in the language-forming capacity of the brain that manifests as song and vision. Psilocybin may have synergized the emergence of higher forms of psychic organization out of primitive protohuman animals. It can be seen as a kind of evolutionary enzyme, or evolutionary catalyst.
Terence McKenna