As somebody who works on computer vision, my general take on these things is that adversarial examples are like poison. It would be fairly easy to add poison to a water supply or the air intake of a large building and kill a large number of people. This rarely happens though. It's ok that water sources, buildings, and people aren't completely immune to poison. The safety requirement isn't that poison can't hurt. Inst…
3 doesn't seem crazy, but it would practically end up with caps, which might not be what you're looking for
4 This both: seems possible, and will basically never happen due to cost in every little jurisdiction