That is begging the question. The argument was supposed to prove that Lisp is "awesome;" if you have to assume that Lisp is a "nice language" for the argument

That is begging the question. The argument was supposed to prove that Lisp is "awesome;" if you have to assume that Lisp is a "nice language" for the argument to work, the argument hasn't proven anything. I think Ruby is a nicer language than Lisp.