I don't understand how we can build self-driving cars, send people to the moon, and create advanced facial recognition software, but can't build technology that can separate plastic bags?
(In response to the obvious counterargument; the configuration space of "a plastic bag mixed in with a bunch of random junk" is actually probably larger than the configuration space for a road with a dozen other cars on it, and so is the action space of a reasonably dextrous claw/arm greater than that of a car. AI is full of easy-sounding things that are really difficult.)