> ...given enough time.

There might literally not be enough time to expand beyond that, given how cosmological horizons work. Being part of the system we're trying to observe puts some nasty limits on what we can know, even in principle.

There are even (ever shrinking) limits on how much of the universe we can observe.

I agree we practically may never know and fundamentally the rules of the universe might end up making it impossible to know somethings, but as far as I know the ultimate limits are currently unknown so 'We can hope ...'.

It's kind of cool to think that some idea that someone has at some point in the timeline of consciousness might be true; but impossible to prove.

Pull the levers and see what happens, and then write it down. That's really all we can do.