I thought it cheesy at the time. Then I tried clojure.

"The value of values". Indeed. Q.e.d. No notes.

Lisp programmers know the value of everything and the cost of nothing.

Apart from Andy Gavin [1]. He knows both the cost and the value of everything.

[1] https://en.wikipedia.org/wiki/Game_Oriented_Assembly_Lisp

sbcl's optimizers knowing the cost of everything is the gamble, no?