I don't know if it's age that makes time seem so volatile, or whether it's age that gives us the sense it takes to recognize it. This started out to be a look at what happens to mental time when you are engaged in physical activity. Looking at where that left me, there was even more opportunity to look at mental time as it unfolds with real life time. It's the miracle of the medium that lets you nest any length of time within any other length of time.