osymandus
Life President
I think you'll find that time was in use prior to the discovery of radiation. The fact that we use atomic clocks is because they're regular enough to keep time constant. Time isn't dictated by atomic decay, the regularity of atomic decay is used mark time.
As for people's perception of time, it's exactly that. Perception. Time itself passes at the same rate to all intents and purposes (slight fluctuations due to gravitational effect are too negligible at this level to consider).
I don't fully disagree that some jobs do have an "age" limit, though I'd argue that it's hard to legislate for an exact age for this (maybe regular tests, like an MOT, after a certain age?), I just wish you could admit you're wrong over your definition of time at a global level.
It dosnt as Time is not an external force which is measurable say like the strong radioactive force . The decay of an atomic clock is used as an accurate measurement of time in relation to the release of energy . Or a more specific explanantion http://science.howstuffworks.com/atomic-clock3.htm . Time isn't (and ive been told off by physicist i know ) a set specific force , its a measurement system in relation to perception and our relativity in space .