You'd have to make additional assumptions in that scenario to come up with a viable solution other than "Kill all the humans.". Perhaps there is a category of

You'd have to make additional assumptions in that scenario to come up with a viable solution other than "Kill all the humans.". Perhaps there is a category of jobs that hasn't been invented yet or that already exists but under the current economic conditions can't support more than a handful of people. White collar jobs have existed for millennia, too (scribes, accountants, civil servants). However, it was only with the Industrial Revolution demand for those jobs really took off. Maybe, some day we'll all be some kind of artists or entertainers. On a more sinister note, perhaps we end up like the humans in the Black Mirror episode "15 Million Merits", where humans have to cycle on exercise bikes day in and day out to generate power and receive credits in return. Those are all very hypothetical assumptions, though. In my opinion, not making any additional assumptions a basic income as of now is the by far most realistic - perhaps even the only - way of dealing with such a - quite likely -scenario.