Dr. Griffith's research seems perfectly acceptable to me. I do not quite understand Peterson's objections that this experiment made it through an ethics committee. The participants in this subject have every right to willingly partake, and the experiment should be legal on the grounds of personal liberty alone.
The mystical and psychedelic experience is certainly real, as he sums up in the end. It is part of the human capacity and likely is for many life forms on this planet and others - to some degree or another.
Thanks for sharing your thoughts. I don't think he was quite "objecting"; it's just that it's difficult for him to imagine how they could have allowed it is all. I'm so glad there is at least some progress. I still don't know where I can go to university and sign up for a degree program in the ethnobotany and psychopharmacology of these magical plants.