A big part in training to have lucid dreams is just plain suggestion, so maybe just having a constant culture-wide preoccupation with lucid dreams would make pe

A big part in training to have lucid dreams is just plain suggestion, so maybe just having a constant culture-wide preoccupation with lucid dreams would make people pay more attention to their dreams and have more lucid dreams. Too bad hearing about other peoples' lucid dreams is about as boring as hearing about other peoples' dreams in general, so there it's a bit tricky how you'd set up the culture around it. One idea might be what traditional shamanistic cultures do, and pretend that dreams actually take place in a "real" astral plane, instead of just being whatever your head comes up with. As per the suggestion thing, this might make people end up imagining their lucid dream adventures into the culturally shared astral plane imagery instead of stuff that's more transparently just a rehash of their daily stuff, and strengthen the lucid dream inducing cultural narrative. For a completely different approach, I wonder if it were possible to build some kind of transcranial magnetic stimulation device that increased dream recall and lucid dreams drastically.