Like consciousness being greater than the sum of its parts and there being spiritual aspects to the universe. Like emotions existing as non localized complex energy frequencies, and karma existing.

I used to be a hardcore scientific determinist athiest. The scientific method, mathematical logic, and unfalsifiablility were collectively my God. My version of the universe was a mechanical box our fates predetermined by an uncaring system. There was no room for magical thinking or maybe invisible unicorns. Thing either existed or they didn't, yes or no, 1 or 0. Everything not absolute verifyable truth was worthless.

Then I had a psychedelics phase, astral projected, experienced ego death, had telepathic communications with divine / cosmicbconsciousnesses using plants as mediums, looked at myself from third person with nonexistent eyeballs, ect, ect.

I will never be able to prove to anyone my experiences are real, but what I experienced was real to me from my subjective reference frame in every way that matters.