 And already some of these products have moved from a human in the loop, which is where a human takes the decision to engage the weapon according to its proposed target, to human on the loop, where the human's role is merely to override the AI weapon if they judge it to be an error. Now the appeal to militaries, of course, is a scale and speed with which these weapons can operate, but that too is the basis of public concern. The scale of an error is unfathomable.