>>13938603>provesReally doesn't prove anything because it's still subjective. We need neural correlates of the psychedelic experience and to quantify certain mental phenomena before we can say anything meaningful about this topic.
Psychedelics reveal that there might be a type of interplay between thought and matter that does go deeper than what we commonly observe throughout our lives without exposure to psychedelic experiences, but nothing is proven but it until it is investigated.
