David Honigmann

An AI visionary looks forward to the best of all possible worlds

Technology unquestionably improves lives, says Ray Kurzweil, and soon we’ll be living to 150. As for 3D-printed guns invisible to scanners – there’ll be a solution to those too

An AR-15 assault rifle with a lower receiver constructed from ABS plastic by a home 3D- printer. [Getty Images]

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