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This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?

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A crowded club may not seem like the ideal spot for a science experiment.

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But if you're studying human social interactions, it's the perfect lab.

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For example, what's the best way to get a bartender to notice that you want to order a beer?

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Might seem simple.

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But try programming a robotic bartender to figure out which customers want another round,

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which is what a team of European researchers want to do.

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To figure out which signals real bartenders notice, researchers videotaped the bar in two German clubs.

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Then they analyzed 105 bartender-patron interactions.

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And they concluded what experienced bar-goers may have already discerned:

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the surest way to get your order taken is to belly up to the bar, and make eye contact with the staff.

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(sound)

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Because attendees not currently thirsty tend to angle their bodies away, and keep a short distance away from the bar.

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The findings are in the journal Frontiers in Psychology.

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Of course we don't really need robotic mixologists.

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The point is simply to train machines to be more socially intelligent.

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Just not so much that they take offense if you stiff 'em on the tip.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.

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