...the experience? Let's say that you are 35 years old and you have a time machine, so you decided to travel back in time to the year when you were 15 years old. You hang out and do stuff, and then you decided it was time to leave and got back into your time machine and came back here. If all of this were to ever happen, how would you remember such an experience? Would you remember it as your 35 year old, present self traveling back in time to see yourself when you were 15? Or would you remember it as your 15 year old, past self being visited by your 35 year old, present self? I do not think it could be both because your mind would not be able to register that; how would your brain possibly remember you visiting yourself and then remember you being visited by yourself within the same experience? The experience did happen; you did visit yourself and you were visited by yourself, but your brain would probably block something out in replace of something else that really doesn't change your remembrance of the experience because you can still remember it. It's just that your brain was very selective as to how you would remember it, but how would you remember it?