Every "FP 101 for JavaScripters" tutorial on the web starts with this same example:

    function adder (x) {
      return function (y) {
        return x + y;
      }
    }

Is this somehow a bad thing to do now, and how would I "lift" it? I don't quite understand.

Pretty much every modern KS library has tons of functions whose definitions look like `const foo = a => b => c => junk(a,b,c)`, and is that really better than just writing a normal foo method like it was 1996?