DO gives you icecream if you smile

This is pretty awesome, from the DO exhibition at the end of the Forum: vending machine kiosks use facial recognition technology to determine if someone is smiling, then gives them an ice cream if they are smiling very enthusiastically. On the other hand, I have to ask: if someone isn't smiling, don't they need an ice cream even more? Why punish someone who's depressed by depriving them of ice cream? Just sayin'.
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