[elihu]

Well, anything that if you do incorrectly someone (or some robot) will likely spot it before the failure gets to a customer. For instance, if you have a robot that picks fruit but 1% of the time the fruit is not ripe or is worm-eaten or something, then you can have a process where the picked fruit are inspected a second time and the bad ones thrown out.

Another case where 1% failure would be acceptable is weeding. Suppose you have a bunch of robots removing invasive English ivy from a forest. Maybe once in a while they'll pull up salal or a fern or something by mistake, but that's fine because those aren't endangered species and in the absence of ivy the ecosystem will quickly recover.