> I wonder what study you could perform to accept hypothesis 1 but reject hypothesis 2. One test would be whether only fear relating to one's own death is elim

> I wonder what study you could perform to accept hypothesis 1 but reject hypothesis 2. One test would be whether only fear relating to one's own death is eliminated, or whether all fear is eliminated. E.g. I wouldn't expect a mother to let her children play with knives or whatever. Also, the key mediating variable in terms of people achieving lasting peace is whether or not they have a mystical experience. And whether or not one has this qualitative experience is only loosely related to dosage, which to me makes it unlikely that some part of the brain is just getting biologically switched off or whatever.