I'm still in high school but after all my various math and science classes including calculus, statistics, geometry, and physics, I think that we've pretty much run the course of both upper and lower standard letters, and upper and lower greek letters.
The problem has become more apparent to me in statistics, where there seems to be an absolutely ridiculous amount of variable overloading in various equations.
Where could mathematicians go for new symbology to lessen this overloading? Greek letters are nice because they are foreign enough to most people that they seem appropriate for math yet familiar enough that they do not distract from the math in the way a more artistic lettering like Arabic would.
What is an alphabet with enough unique characters in it that is feasible to use in such a situation?
Is there any kind of push for such a thing?
I mean, I understand that context is the biggest identifier in symbol meaning, but at some point as concepts gain importance, these symbols become somewhat like a reserved symbol, such as pi.
You'd get some confused students if you tried to use upper case sigma or pi as a standard variable.