Really, so you can measure time when you are sleeping? Can you differentiate between how much time has passed in your memory? Can you differentiate the difference in time in memories? Can you tell the difference in time between last week and last month? Do you have memories of 10 years ago that you could swear happened yesterday, or 2 minutes ago, or 3 seconds ago? Can you tell the difference without knowing how long ago it was? I've heard many many people, myself included say, "it seems like it happened just yesterday." Do you think they are lying? I've heard people say I don't feel 40 years old, and I can't believe that I am 40 years old. It seems like just yesterday I was 20 years old. Do you think they are BSing, or do you think they can't tell the difference in something that happened 2 minutes ago, and something that happened 30 years ago?