[stephencanon]

> Once you've learned Haskell, actually, you can be far more productive in it than most other languages.

Not when you're doing mathematical research. You can write x86 machine code and the time spent programming is still completely dwarfed by the time spent doing math. Mathematics is full of renowned professors who write F77 by hunting and pecking with one finger. There's no reason for them to use anything "more productive" because they can already code far, far faster than they can think of what to code.

There are extreme outliers for whom this doesn't hold, but they are few and far between.