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.

speaking of science,

doesn't it seem ignorant to think that there isn't something more to the universe than what meets the eye? I'm not really talking about a theistic god, but just... something more... i mean we can only experience the universe through our five senses and we aren't the pinnacle of evolution, because there is no such thing. How much of what we think we know and experience is really just our minds/brains filling in information for us, just to cope and survive?

I know it's 'useless' to think of such things, because it just raises 'what if we're all just brains in a vat' type scenarios that have no practical application to our lives, but even if it is just philosophical wankery, i've seen very few people admit to the fact that we just dont know, and probably can't know.