The REPL. Just like with any Lisp, true REPL makes a huge difference in the workflow. Anyone who never had honest and heartfelt experience with any Lisp or Smal

The REPL. Just like with any Lisp, true REPL makes a huge difference in the workflow. Anyone who never had honest and heartfelt experience with any Lisp or Smalltalk, would never understand how nice it is to be able to evaluate any expression and sub-expression without any kind of ceremony. Aficionados of non-homoiconic languages keep saying stuff like: - "oh, we can probably do this and that and get the same experience...", or - "give [their favorite language] five to ten years, it'll get the same..." It's been over six decades. Non-homoiconic languages still don't have "true" REPLs.