The arrival in late 2022 of the ChatGPT chatbot, with its remarkably sophisticated — if occasionally erroneous — answers to a vast array of queries, was a milestone in artificial intelligence that’s taken decades to reach. Scientists were experimenting with “computer vision” and giving machines the ability to “read” as far back as the 1960s. Chatbots began life when the Beatles were still making music. Today it’s possible to imagine a computer being able to perform most human…
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