There’s no evidence to point to the big bang as being the very beginning, though. There may well have been a billion big bangs before this one. Each one taking so long to reset and start anew that to us, it might as well be seen as about infinity. Humanity outright doesn’t have the knowledge of what happens on extremely large or extremely small scales. We don’t really have a clue for what actually made space start to expand in the first place, so we don’t know if it’s ever happened before, or even if it happened anywhere else at any other time but outside of our observable universe.
There’s no evidence to point to the big bang as being the very beginning, though. There may well have been a billion big bangs before this one. Each one taking so long to reset and start anew that to us, it might as well be seen as about infinity. Humanity outright doesn’t have the knowledge of what happens on extremely large or extremely small scales. We don’t really have a clue for what actually made space start to expand in the first place, so we don’t know if it’s ever happened before, or even if it happened anywhere else at any other time but outside of our observable universe.
Maybe there were other big bangs, but we need evidence of that, and that evidence doesn’t exist.
Jyst saying “but we don’t know” isn’t a replacement for evidence.
There’s no evidence that time started at the big bang, either. So it’s silly to say.
Not how it works.
“Time exists” is a positive statement. We need evidence for positive statements. There is no evidence of time until the big bang.