A relative of mine works at a not-so-small place (some 100s of terminals) that used to run AS400s. Years have passed, but It's still green screens galore. He ex

A relative of mine works at a not-so-small place (some 100s of terminals) that used to run AS400s. Years have passed, but It's still green screens galore. He explained me that most of the personnel have memorized the menu so well that they can do their job without hardly ever looking at the screens. Changing that would spell catastrophe in terms of re-training and lost productivity alone.