Our measure of time skews as we grow older - as a child, it takes forever to become old enough to stay home on your own, to drive, to go out with your friends or to date. Those older than me have told me that the time passes quickly for them; the days flow together and before they know it, a year is halfway gone and the previous one seems a distant memory. Time is out of our control, moving at the same speed as it always has, and yet somehow we each have our own unique perception of it. There are dozens of ways to keep track of it: the clock on the wall, the watch on your wrist, the phone in your hand, the calendar you bought because you liked the design of it.