Turns out the patients like having the lights on, so do the nurses, so they don't trip over anything.
Pro-Tip: Want to change medicine and help the world? Find a way to get rid of the wires and tubes. It is really amazing how many wires and tubes there are in a room these days. Yeah, wireless charging and all that, but often that'll mess up a pacemaker (maybe) and so it's avoided. Also, bandwidth issues with a whole building of wireless signals. It's not easy, but it would help more so than a cancer vaccine.
