I just think it happens. I told my oldest kid who is almost 18 about 2 years ago soon he would be hitting a spot where December seemed like yesterday. The example I gave him was once I hit about 17 or 18 magically I'm now going on 31 ( he's my stepson). He brought it up the other day he said remember that time you said that, well it seems like yesterday. I have bad memory to but that's cause of all the other narcotics I've abused myself with.