> Lisp is more like an idea (or set of ideas) rather than a concrete tool Indeed, there is no language that is just "Lisp" any more. There once was, of course.

> Lisp is more like an idea (or set of ideas) rather than a concrete tool Indeed, there is no language that is just "Lisp" any more. There once was, of course. There is a legend that he requested that no new language be called Lisp (and nothing else) so that there is no confusion. SBCL, Racket, Gauche Scheme, TXR ... are examples of concrete tools for specific tasks.