I was wandering along on my way to the bus this morning thinking about how quickly the year is passing; it will be June already in a week or so. That got me thinking about how time seems to speed up as we age, that the days seem more fleeting than they did when I was a kid, or even a young man. And that little reverie kick-started a theory of why the passage of time should seem different at different ages.
Let us first suppose that the neural mechanism for working out how long ago an event of a known date seems to have taken place involves flipping through a catalogue of our memories and making a calculation based somehow on the amount — or “bulkiness” — of the memory pile.
Let us next suppose that one suffers from the occasional short term memory loss — a standard condition of getting older it seems — such that a wide range of time is simply not memorialized.
Thus, when the mind flips through the memory for a particular period, the file seems less “bulky” (because of the missing memories) and the time between then and now will appear to have gone past quicker.
That’s my theory and I’m sticking to it!