Well, numbers, I believe, comes close to Universal, but not entirely.* I believe, as numbers are metaphors, that metaphors are actually at the root, for while there are some things that mathematics cannot work with well, such as things that are subjective, inconsistent, irreconcilable, contradictory - in short, matters of day-to-day life - metaphors can cover that territory as well as numbers, but number, while nearly complete, will remain in the department of "almost". But I have yet to see where metaphorical connections cannot cover it all. Metaphors in the form of numbers are capable of assisting us to create machines that can work with metaphors in the form of electrical impulses which metaphorically translate into things we humans can use and see, like this screen, which is a metaphor for paper itself... and so on. It's a different view of things than we're taught: we're usually taught that numbers are at the top of the heap. But I believe there is one level higher than number, and that's metaphor. That's my hypothesis, a territory that seems barely even begun to be explored. I could also be wrong but I'm ok with that as well. There's enough people working on mathematics; yet how few are placing numbers and mathematics under the heading of metaphor? I've found none, although I'm sure there are some. I think there's something here that bears exploration.