If time travel is possible should society be ethically obligated to try and reverse some of history’s worst crimes against humanity? That’s the question I posed to MIT quantum mechanic Seth Lloyd, who was part of a 2010 team that used quantum teleportation to send a photon a few billionths of a second back in time in order to try and have it destroy its former self. « more »

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Should Time Travel Be A Moral Imperative? (Forbes)

Professor Seth Lloyd