Most of you are familiar with the virtues of a programmer. There are three, of course: laziness, impatience, and hubris.
Larry WallPerl doesn't have an infatuation with enforced privacy. It would prefer that you stayed out of its living room because you weren't invited, not because it has a shotgun
Larry Wall[Perl] gives you the STDERR filehandle so that your program can make snide comments off to the side while it transforms (or attempts to transform) your input into your output.
Larry Wall