Somehow I'd guess 3/4 of this lot could not manage an idle descent from altitude to save their lives without furiously typing requests to the VNAV gods.
While the programmer boffins surely appreciate the promotion, am I not alone in nearly always having a rough idea in mind for cross check, just in case 'ye gods' have gone mad? And for those times when it's not perfectly clear, a visit to the altars of Father Time and Maths should help the lost find their way.