[nprateem]

I'm pretty open minded about this stuff, but I recall reading Robert Monroe (author of several books) tried to prove to himself his OBEs were real by having his wife place an object in a box downstairs without his knowledge and trying to find out what it was.

IIRC he said he invariably got sidetracked between leaving his body and going downstairs, or would be attacked by entities of some kind. He suggested perhaps some kind of subconscious resistance to the experiment.

He listed several times where he claimed to have gained knowledge without trying to while OBE but I wasn't entirely convinced by any of them, so who knows.

The fact he claims to have had hundreds of OBEs and couldn't conclusively prove he could gain knowledge makes me sceptical that he wasn't just in a replica of reality generated by his mind. Anyway, they sound fun/scary/ real to the experiencer.