3 ms·

“never go to sea with two chronometers, take one or three”

• DennisP 7mo ago
  Seems like chronometers would be a case where two are better than one, because the mistakes are analog. If they don't exactly agree, just take the average. You'll have more error than if you were lucky enough to take the better chronometer, but less than if you had taken only the worse one. Minimizing the worst case is probably the best way to stay off the rocks.
  • robocat 7mo ago
    And for breaking failures, two is way better than one! Having zero working chronometers would be bad.
    • DennisP 7mo ago
      And come to think of it, if the two chronometers are wrong in different directions, then the average could be more accurate than either of them.