[racket] Quoted expressions in #lang racket

I used different words than Matthias because we were trying to offer
somewhat different explanations of what is happening.  You chose to
use his words in response to mine, which only confuses things further.

(There is, incidentally, a good reason why (+ 1 2) could, but does
not, evaluate to (+ 1 2).)

But overall, since I appear to be talking nonsense, I'll avoid
following-up and aggravating you further.  Good luck.

Shriram