Thanks for the responses. Basically, what caused me worry was a conversation on Reddit. The guy arguing for this said no one knows what happens in the brain when someone loses consciousness or where the consciousness goes. That, because brain waves continue, doesn't mean our consciousness continues and that for all we know we could die when we lose consciousness and be replaced by a copy. He argued that perhaps the processes responsible for consciousness shut off and when they come back on create a new consciousness like the way the brain recreates memories when you remember them instead of actually storing them. The only reference he gave was concerning dreams. He said the theories of neurological origin of dreams (shown here Https://en.m.wikipedia.org/wiki/Dream under neurological theories) prove dreams aren't proof. I'm not sure if any of what he said is true. I think the brain does actually store memories so that part of what he said is probably false. I know this is a ridiculous thing to worry about, but the idea of it kind of creeps me out. Do you guys think any of what this person said is true?