My only dislike for 'constant green is good' is that for all I know, the control loop of whatever piece of kit updates it might have just frozen, so it will stay green forever.
Bruce has a good article on his site about why a fire alarm bell makes a poor alarm system - if the signs for something being 'not in alarm' are the same
as something being broken, then it's a poor alarm. I admit I feel the same about HUDs with constant LEDs, but then again, I now have a three-led HUD with the smithers code on it
