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It sounds like a science-fiction nightmare. Autonomous weapons, which use artificial intelligence to select targets without human intervention, have been described as "the third revolution in warfare, after gunpowder and nuclear arms," around 1,000 technology chiefs wrote in an open letter. "The key question for humanity today is whether to start a global AI (artificial intelligence) arms race or to prevent it from starting," they wrote.
NEW YORK (AP) — Twitter failed to add users at a quick enough pace for investors in the second quarter even as revenue grew sharply, feeding concerns about whether it can ever become a mass-market service like Facebook or Google.