In my opinion, Common Lisp is the environment to develop informed opinions about the tradeoffs and benefits of other forms of Lisp. While you can compare Schem

In my opinion, Common Lisp is the environment to develop informed opinions about the tradeoffs and benefits of other forms of Lisp. While you can compare Scheme to Clojure and Clojure to Racket, Common Lisp embodies the alternatives against which each was developed.