I agree - figuring out how to take advantage of time dilation for therapeutic purposes would be very cool, and potentially quite useful. This is kind of what I hope comes from renewed research into psychedelics, being able to pick out the mechanisms for all the different effects and developing techniques to cherrypick just a few with therapeutic benefit with a much reduced risk of freak out. We may already be there re:time dilation alone with TCMS or something, idk.
But real talk - which do you see getting funded for wider use first, 5 year retreat in an hour, or psychic prison?
(Actually, saying it at loud it might be even odds, depending on the price tag folks can assign to the retreat)