@zens I think that if you explicitly state you're using "long symbol names" or "explicit multiplication" (name tbd), then only the single symbols are taken (and possibly only in limited contexts), and the system allows for longer strings of symbols as a unique identifier.
So even if e is taken, "ee" is a different identifier, and doesn't represent "e*e".
Eg, some physics: "speed = distance / time" involves 3 unique identifiers.
This seems similar to math & variables in software to me.