A conjecture on the human perception of time

Parijat Bhattacharjee
A Post A Day Project
2 min readJan 12, 2017

One assumes that a year should always last a year. It should take neither longer, nor shorter than a year, for a year to pass. This is a perfectly reasonable assumption, one would reasonably assume.

The perceived length of a year: based on reasonable expectation

In experience however, the perceived length of a year appears to be inversely proportional to age:

The younger one is, the longer a year seems to stretch. Conversely, the year seems to whiz by, as one gets older — until it is almost a blur during most of our productive years.

The perceived length of a year: based on empirical evidence (so far)

So, does the perception of the length of a year get shorter and shorter as one ages further?

This does not appear to be likely.

Probably, sometime after middle age and post-retirement, the years will start to feel longer again. Until finally, as we age further, a year will eventually stretch to infinity, as we lose sense of time and drift off into the void.

The perceived length of a year will therefore most probably form a bathtub curve.

Hypothesized bathtub curve — generalizing the human perception of the length of a year, over the years

Is this hypothesis correct?

Perhaps only time will tell.

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