>>5371089

> Is the universe mathematical?

Maybe. If it is we have nowhere near the understanding of math. For a simple example, there is no elementary closed form solution for the motion of a simple pendulum, but "the universe" doesn't have any trouble with it.

> Just a super naive question but i wonder why math is used for almost every fields right now

There's really no such thing as "math." It encompasses so many ideas most of which *aren't* used. Where it works we keep it, where it doesn't, we don't, so you are looking at it from a kind of point of confirmation bias. We use addition on marbles, but not clouds. If you only look at marbles, then you think everything is addition, and it always works for some mysterious reason. But the reason isn't that mysterious; if it didn't work, we'd not use it (or use some other kind of mathematical operation which did).