That ATA story reminds me of the time that I was flying on LH circa 2000. I was watching DVD movies on my laptop and the stewardess came over and very angrily told me to turn it off, as it wasn't permitted. I asked her if she was sure and maybe if she could ask the pilot, which she did. But still no go on letting me finish my movie (about an undersea colony being attacked by a shark if I recall). Sometimes technology gets ahead of the rules.