On one hand, you can't artificially preserve jobs that are not needed. You can't keep mining coal to protect the coal miners.

On the other, automation concentrates wealth in the pockets of those who finance it. Automated checkout machines do not benefit fast food workers, only investors. What happens when you automate a third or a half of the workforce like that?

I hope that we can share the spoils of all this innovation, because the future will be very bleak otherwise.