I too love Scheme. I prefer Racket Scheme but to each his/her own. I think it may be whole running VM kind of model that Common Lisp requires the programmer to

I too love Scheme. I prefer Racket Scheme but to each his/her own. I think it may be whole running VM kind of model that Common Lisp requires the programmer to keep in mind. What is defined/expanded at run-time VS the compiled nature of Scheme/Clojure. I may be wrong about my wording here but there have been times when playing around with real Common Lisp that I just couldn't understand why something wouldn't work when it did in Scheme (I don't remember the specifics).