According to this government report, the DoD's system for coordinating "nuclear forces" is an IBM Series/1 from the 70s.pic.twitter.com/9ZiiStTtBA
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reliability reliability never changes
the hardware is probably from the 70s but the code is probably older, with virtualisation thrown in the middle.
emulation? 
Maybe they should just leave it be. I struggle to imagine anything built today would last that long.
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