Originally posted on my blog Sloth And Dignity.

You know, it’s funny… the other day I just plugged in a backup hard drive that I haven’t used in about 4 years. I looked at all the stuff was working on again, none of which I have thought about since and most of which I hadn’t even remembered, and realized, “Wow, that was a really long time ago.”

So I think the frequently-noted sensation of time seeming to pass more quickly as you get older has more to do with how often we think of something. The more often you think of something, the more recent it seems; but be reminded of something actually relatively recent but which you haven’t thought back on even once since it happened, and the full weight comes to bear of just how long it’s been, just how much time has passed since things that were even far more recent than long-ago things that seem like they were just yesterday. If the kids seem to be growing up fast, it’s just a sign of your affection for them.