The blurred line between human and machine

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Google showed off a robot that sounds convincingly human at its annual conference for developers earlier this month. The company demoed the new AI technology to a wave of cheers, but some are warning about the risks of AI. Researchers have shown they can send hidden commands to Alexa, Siri and Google Assistant that are undetectable to the human ear, which begs the question -- do the perils of AI outweigh its promise?