There's an old chestnut that theology is like a blind man trying to find a black cat in a dark room.
If so, divine revelation is like a black cat calling out to a blind man in a dark room - and then healing his blindness when he finds him.
When who finds whom, though? I'm intentionally ambiguous on that point.
Placebos work sometimes. So, shouldn't the question be, "Why do placebos work and how do we standardise their efficacy?" This video really is mind-blowing. https://www.youtube.com/watch?v=KpNZoowANNU #FUELGOODTRIBE