I don't find that especially good as a sole remedy, because lots of people are stupid. If they see a green outline box overlaid on a video image with the label 'gun', many many people will just respond to the label instead of looking at the underlying image and trying to make a decision. Probability and validation history need to be built into the product so that there are audit logs that can be pored over and challenged. Bad human decision-making, which is rampant, is always smoothed over with justifications like 'I was concerned for everyone's safety', and usually treated in isolation rather than assessed longitudinally.