alt Hacker NewsThere is no evidence of that. What you say is not supporting, but rather "conveniently makes sense".
I don't dispute the utility of psychedelics. But I have observed (and this is anecdotal) that the fanatic devotees of the drugs tend to engage in magical thinking around the power/history/whatever of psychedelic substances, no matter their intelligence or accomplishment, or rigorous critical thinking in other areas.
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It’s a controversial theory, but it does exist[0]. As far as I know, there is no prevailing theory about where consciousness came from so speculating based on existing theories isn’t claiming it’s the truth.
Is it such a leap that fungi are one of the few natural drugs that cause brain elasticity so maybe our early ancestors took it to get the evolutionary process started.
Reconciling the profound interiority of the experience with a mere external catalyst can be quite challenging.
Consider the question yourself next time you are in the throes of an exoerience and see how hard it is to maintain objectivity...