Can artificial intelligence really summon dead relatives back from beyond the grave?A growing number of people are trying to find out, with pioneers such as inventor and futurist Ray Kurzweil using artificial intelligence to recreate lost relatives.Kurzweil's attempts to 'bring back' his father - who died when Kurzweil was 22 - using began more than 10 years ago and are chronicled this year in a comic book by Kurzweil's daughter Amy.
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