In the 2012 film “Robot and Frank,” the protagonist, a retired cat burglar named Frank, is suffering the early symptoms of dementia. Concerned and guilty, his son buys him a “home robot” that can talk, do household chores like cooking and cleaning, and reminds Frank to take his medicine. It’s a robot the likes of which we’re getting closer to building in the real world. The film follows Frank, who is initially appalled by the idea of living with a robot, as he gradually begins to see the robot as both functionally useful and socially companionable. The film ends with…

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