I mostly mention that because we keep making jokes about how our PL class is mostly about why we should use ML. Whenever we see a question on an assignment like "Can you do [x] in another language [safely, efficiently, etc.]?" we know the answer is already "no".
Jokes aside, it's only because the class focuses on the advantages of more advanced type systems (existential types, polymorphism) and why stuff like immutability is useful, and ML is just a good example of such a system.
