Why is INPUT such a Rube Goldberg?

[Snorre]

I've thought that Cwindow was the Window class made by Cyrille, initially written as abstract Twindow by Tim, then generalized as Bwindow by Bernard, extended as Mwindow by Matt, and finally exported as Jynput by Jean-Yves, but renamed by some HP-marketing people (who thought that would be easier) to Input.