> People who don't speak english for example but who read python can often read code you wrote and understand it. Math is a similar thing and sometimes called a universal language.

I doubt that's true. It would be like reading re-prettified minified Javascript: they wouldn't understand the meaning of the identifiers or comments. That doesn't strictly make it impossible to understand the code, but it's much, much harder.

It's the same for math, frankly: without explanations of what the things in equations are, or why the author is doing what they are doing, it's somewhere between very hard to understand (for the most formal stuff, like the Principia), and hopeless for most papers.