Yeah, and watch out for the word "Elementary". Mathematicians use this word to mean "can be understood by a single person". This in contrast to the kind of math

Yeah, and watch out for the word "Elementary". Mathematicians use this word to mean "can be understood by a single person". This in contrast to the kind of maths that leans on other difficult maths so much that no one person can figure it all out. That mathematics is the non-elementary kind.