by beerglass on 2/23/14, 5:05 AM with 2 comments
by SaberTail on 2/23/14, 7:54 AM
For one thing, energy isn't conserved on a universal scale. Energy conservation is a consequence of time invariance[1]. We've measured that the universe is inflating, and so isn't invariant in time. So on large enough scales, energy isn't conserved.
And, as a (ex-)physicist, I'd be more likely to say something about how little time we have compared to the age of the universe, or even compared to single atoms. Or about how we end up quantum entangled with the entire universe on long enough time scales (at least in some interpretations of quantum mechanics).
[1] http://en.wikipedia.org/wiki/Noether's_theorem#Example_1:_Co...
by cgore on 2/23/14, 9:42 AM