Funny thing. I actually was thinking about this a bit back.
I also in my younger years, tried "experimenting" but with another natural substance which I did not know of, nor have heard of since. I hate to make this a "drug" topic more, but it was called, "pods" from what I know.
Anywho, they made my eyesight doubled, and I often remembered of it as the "floating sausage eyes," as I knew of the "coctail weenie" effect for quite a while, just known as the previous name. It seemed to diverge my eyes, as to make it hard to read. It did involve mild hallucination.
But it just brings to mind, that maybe these people are using harmful chemicals to "trip" when maybe with a little practice and learning they could do it with out using chemicals.
Although, I've thought this for quite awhile. My intentions after learning what the GOOD is, not the using for harmful stuff, I am only consuming my life with PR'ing BOOKs and not my life. =)
Kinda strange.
-jesse