The John McCarthy Argument
> Which one has more oomph? Can Haskell manipulate code as data?
This argument is also (un)commonly known as the John McCarthy argument. McCarthy is the inventor of Lisp, and argues that since neither Python nor Ruby can do this, then they are not even where Lisp was some ~50 years ago.
Of course, that is not really a requirement to make a language useful, but still … it’s nice to have something to kill any Python vs. Ruby vs. Common Lisp discussions.