All five recommended languages are functional languages very similar to each other. Why not recommend a language outside the functional paradigm, such as a logi

All five recommended languages are functional languages very similar to each other. Why not recommend a language outside the functional paradigm, such as a logic programming language (Prolog, ASP, Mercury, etc), or, I don't know, an esoteric language like Brainfuck or Modrian? We're trying to teach programmers to think outside the box, correct?