> The crossword has a similar sort of unwritten rule, maybe not as strict, but really hard technical words seldom appear.
Not my experience at all.
Ask me how I know what an EPEE is
> Ask me how I know what an EPEE is
That’s when you’re like, only tangentially involved with the making of a movie or tv show, but too famous to go without a credit?
Ah yes, good old ARA Parseghian. That guy.
EPEE is a common fill word from a lexicon informally known as crosswordese.
https://en.wikipedia.org/wiki/Crosswordese
Really no harder than memorizing all the 2 and 3 letter words in Scrabble and many players will pick most up in a few months.