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jefftk
on Sept 12, 2023
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UK air traffic control meltdown
> if one fails, he will have no idea which one is correct
Depends how it fails! For example, say, when you change direction one turns and the other doesn't.
cutemonster
on Sept 12, 2023
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Couldn't he bring his own 3rd? Compasses aren't heavy?
jwr
on Sept 13, 2023
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…or a 4th and a 5th, and have voting rounds — an idea explored by Stanisław Lem in "Golem XIV", where a parliament of machines voted :-)
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Depends how it fails! For example, say, when you change direction one turns and the other doesn't.