That’s a good example of a worst case scenario. This is why we would still need humans loitering about.

The question is do they still need 10? Or 2 would suffice? How about 5?

This does not need to be a debate about the absolutes.

You will need 2. BUT, and here is the rub. https://en.wikipedia.org/wiki/Jevons_paradox

I am hoping Jevon will keep employing me. He has been a great boss for the last 25 years TBH.