Look, I know this might not be a popular view here on HN, but I think this is useless. And bad. I'm not talking about the technology behind it (I think it's an amazing achievement).. I live in Barcelona and I have at least 5 medium-sized supermarkets within 5 minutes walking distance from my home. Plus there are several smaller shops that sell fruits and vegetables. I know all the people who work in these supermarket…
For you, as the customer, maybe it seems cute and fine as a job but from my time in the job it's basically hours of mindless labour that teaches you little and offers no room for growth.
Your opinion on this is actually kind of despicable. You want people to perform robotic menial jobs because you feel like it adds humanity to your shopping experience but you seem content to ignore the fact that the job in question is a boring, tedious slog.