Nice article.

One thing, re “In Python we typically restart everything at each code change“: I sometimes run Python in Emacs with a REPL. I evaluate region to pick up edits. Not bad.

The big win for the Common Lisp REPL is being able to modify data, do restarts, etc. I usually use Common Lisp, but for right now I am heavily using Clojure to write examples for a new Clojure AI book that I am writing. I miss the Common Lisp REPL!