I ALWAYS for some reason think about the possibility of every memory that I have being fake. Like, the second that I'm typing this, I could have been put here, and implanted with memories to make myself think that I've been sitting here at the computer browsing these forums. Does anyone get what I mean? It's really weird to think about.
This maybe not exactly like you are thinking but its as is if you, in reality, are laying on a lab table asleep, while peope are sending "memorys" into your brain to make you believe you are actually concious. Anyone ever seen the old Batman the animated series tv show? The mad hatter does this to Batman. Have you ever seen waking life? In one scene of that movie they discuss how this girl feels that she has already experienced life and feels as if she is an old woman looking back on her life. Then they go on to discuss that after death the brain continues to function for about 5 minutes. And they also say how in a dream many events can take place within a matter of seconds. So what if you are actually dead but your brain is still functioning(kindof in a dream-like state), and you are actually remembering and looking back on your life. Just some thoughts.
Yeah, that's pretty weird too. I also ALWAYS think about what people would say if they were suddenly transported through time, from like any point in the past, to our time. I don't know why, it's cool to wonder about things like that though.