I've heard that your perception of time is dependent upon how old you are. The older you are, the more quickly you perceive time as passing by. I don't exactly remember how I did it, but I determine that you can figure out how one person is perceiving time compared to another by finding the ratio of the square roots of their ages. It has something to do with aging being continuous rather than incremental.

For example:

Chad is 25 and Virgin is 30.

sqrt(25)/sqrt(30) = 0.913

Chad perceives time as passing by at ~91.3% the rate Virgin does.

sqrt(30)/sqrt(25) = 1.095

Virgin perceives time as passing by ~9.5% faster than Chad.

Also, how would I describe growth that's based on square roots? Would I say it's square root growth, and that something is growing square-rootly?