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What are the rankings based on? I was surprised to see Proteus in the #2 spot. It's very slow in person, and not like it has the amount of PR that Spot or Atlas do.

Side note, I got to see a full-sized Spot in person. Nothing prepares you for how loud it stomps. They were doing a demonstration on the second floor and I thought the building was gonna collapse.

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Good question. I'd assumed, given that it's an IEEE website, that they were rated by members of IEEE (Institute of Electrical and Electronics Engineers). Instead, looks like it's open to anyone to rate - you can go to any individual robot's page (https://robotsguide.com/robots/spot) and rate it on the three questions asked.

And it seems to be a naive average of users' ratings, so the "top" robot has only 7 ratings, the second one 109 ratings, and the third has 12,510 ratings! It's likely that if they used something more reasonable like a Bayesian average, Spot and Atlas would be in the top 5, given the number of votes they have compared to the others.

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