[recuter]

Who and what bestows upon them such powers other than their own claims? The legal research of psychedelics has only recently resumed and is only available to a very select few.

[heed]

Well, clandestine psychedelic assisted therapy has been going on for at least a few decades and seemed to be largely based on both psychedelic experiences had by the therapist themselves, and trial and error - which you could argue is not too different from shamanic practice.

I’m not sure how much, if any, scientific rigor was applied in the past - I hope that changes.