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How remarkably unsatisfactory.

The argument being:

You can't propose physics ever changed, that'd mean energy could have been created at some point!

Energy was created at some point, wouldn't it be nice to know when?

Everything created at the Big Bang exactly as it is now, stop asking questions.

Nobody argues it wouldn't be nice. Physics argues we can't ever know. It's a rather significant difference and if this gets proven wrong, you'll find that physicists are the ones partying the hardest.

You're asking to go too far back in time.

The difficulty is we don't know what happened in the first planck second after the big bang, let alone before the big bang (if that's meaningful).

We haven't unified quantum mechanics and relativity. Hence we can't be certain that singularities exist, or that the universe started off in a singularity.

I'm aware. What I'm saying is if that's how much you don't know, you'd better not make any claims like "X can't be accurate because it doesn't match what I think I do know".

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