@bsmall2
> I got paid for push-mowing lawns as a teenager
Me too. But robotic lawnmowers won't put teengers out of casual work. A neighbourhood has a certain amount of disposable income to put towards employing the local youth, and if they all have robotic lawnmowers, they'll pay them to do something else. This is true of the economy in general; automation has never - in itself - changed the amount of work people can get paid for. Because it's not determined by the amount of work to be done.