"rms has crippling RSI" (anonymous, as quoted by Skip).
I suspect that 'rms' = Richard M Stallman (but why lower case? to insult him?). I 'know' that RSI = Roberts Space Industries, a game company whose Kickstarter project I supported. Whoops, wrong context. How about 'Richard Stallman Insanity' (his personal form of megalomania)? That makes the phrase is a claim I have read others making.
Lets continue and see if that interpretation works. "should indicate that emacs' ergonomics is not right". Aha! Anonymous believes that using his own invention, emacs, is what drove Richard crazy. He would not be the first self invention victim.
But Skip mentions 'worse for wrists'. So RSI must be a physical rather than mental condition. Does 'I' instead stand for Inoperability?, Instability?, or what?
Let us try Google. Type in RSI and it offers 'RSI medications' as a choice. Sound good, as it will eliminate all the companies with those initials. The two standard medical meanings of RSI seem to be Rapid Sequence Intubation and Rapid Sequence Induction. But those are procedures, not chronic syndromes. So I still do not know what the original poster, as quoted by Skip, meant.
-- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list