We all know what it’s like to forget something. A loved one’s birthday. A childhood memory. Even people capable of extraordinary memory feats – say, memorizing the order of a deck of cards in less than 20 seconds – will still forget where they left their keys. People, it seems, are never in complete control of their memories. Forgetting is a tricky business, both for humans and for artificial intelligence (AI), and researchers are exploring the idea of robot memory in many different ways. This raises not only technical issues, but concerns related to privacy, law and ethics. Imagine if…

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