Time as before, or after, but never now.
Posted 04-25-2010 at 09:30 AM by TuringEquivalent
I doubt there is something called “now”. We know from special relativity that different observers have different notions of now. For Observer O, and O*, where O* move at +v relative to O. An event E, depicted by O is (x, y, z, t), and O* is (x*, y*, z*, t*). In general, t is not equal to t* for v>0. This is just the consequence of the special theory of relativity that our notion of simultaneity is wrong. So, if we discard the notion of now, what remains of our notion of time? I there is still the notion of before, or after of an event. So:
1. There is no now.
2. There is before for an event.
3. There is after for an event.
My claim that 1 to 3 captures our notion of time .
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