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Fernie · F
I feel sure that, so far, no one has come back with any data.
LeopoldBloom · M
@Fernie: That is true. Some people have reported near-death experiences, the whole long tunnel, light at the end, meeting dead relatives, etc., but without exception, none of these people actually died, at least, they didn't die permanently. So they could have been experiencing something that can happen when the brain is deprived of oxygen.