Way too ascii-centric. Getting case transformations right in the presence of unicode can be complicated.

Unicode in identifiers is ugly. I never use that.

Helps make code look more like the algorithm it's implementing - would rather just use α than keep spelling out "alpha" every time. Good editors and REPLs make it easy to enter unicode symbols by tab-completing the latex spelling, e.g. \alpha<tab> gets replaced by α.