Observations

So, I believed. Yes, I did.

trait Map[-Domain, +Codomain].

What does it fucking mean? That an f: X → Y is also X1 → &Y1 for any X1 <: X and Y1 >: Y.

Do I have to elaborate why it's just plain fucking bullshit?

Ok, ok, I understand, Curry typing.

Does Curry typing have any categorical meaning? Eh...