Is the universe discrete or continuous?

What proof is there that the universe is discrete and what proof is there that the universe is continuous?

You can never know if the universe is discrete for certain since even if it appears so there may still be some undetectable phenomena you are unaware of.

You can never find evidence to suggest the universe is continuous as there can never be a scientific instrument capable of infinite accuracy.

>>6
I know this is vague, but what if we ARE brains in vats? Or if any number of other untestable assertions are true? Yes, it has no application to us and there is no way of knowing. But, assume that an assertion is true, doesn't the simple fact that IS true have 'meaning'?

I guess i may be confusing myself here, but, just by virtue of it being true, shouldn't it be more than 'meaningless noise' to us?

I guess it comes down to the 'meaning' of truth and the nature of reality.

The universe is a confusing place, forgive me for being dense.