”When receiving a delivery from a drone or driverless vehicle, a gentle-person should leave a small gift or token of appreciation. A handful of nuts and bolts, a small bottle of machine oil, or a few gaskets and o-rings go a long way to expressing thanks for the delivery.”
I think tipping varies a lot country by country. Here a lot of workers earn way below minimum wage- like restaurant workers. And this is allowed by law. So I make sure to tip both as a sign of my appreciation for good service and to make sure they get a meaningful return for their work. And even if I could change the law, I would still tip for good service.
Our son rented an “autonomous golf caddie” the other day. It is a motorized cart that holds your golf bag and follows you as you walk. You wear a small monitor on the back of your belt. He said that it was about 85% accurate. His friends were in motorized golf carts and he had no problem keeping up with them.
My wife and I used to go to a particular diner where a certain waitress always really treated us good. We would always leave her a more than generous tip. One day she came by and said please don't tip me, the owner takes all the tips for himself. It's my belief that the world is full of ugly people who deserve a swift kick in the butt.