What makes you think that there exist non-computable phenomenon?

Like the discussion in this Reddit post, many argue that there exist non-computable finite phenomenon without any valid reasoning.

https://old.reddit.com/r/Futurology/comments/10s52md/i_final...

Depends what you mean by “non-computable”. e.g. in theory we could forecast the weather years in advance — it’s just computations based on input data — but in practice we can’t because weather is chaotic and we can’t collect the input data (initial conditions) to the required resolution and precision.

isn't the halting problem a non-computable phenomenon?

Is P=NP computable?

I would imagine there's something interesting around computing quantum phenomenon to precision since it's not measurable?

I don't really know anything other the high level about those but I would love to hear how they fit into the picture