5 ms·
I have read that, if you do the computation correctly, averaging 3 mechanical watches can give the accuracy of a quartz based watch.
by madengr 7y ago
I have read that, if you do the computation correctly, averaging 3 mechanical watches can give the accuracy of a quartz based watch.
- metaphor 7y agoAn assertion with so many conditional assumptions that it's pragmatically meaningless.
- ComputerGuru 7y agoI’ve always heard it as basic quorum before Raft was a thing. One clock and you never know if it’s right or wrong. Two clocks and you’re worse off than one in case they disagree. Three and at least you can (probabilistically, anyway) reach a rough consensus good to the deviation of the clocks not exceeding some threshold in comparison to the other two.
- ithkuil 7y agoWhy does it matter to reach strict consensus with a quorum of half plus one in the case of a continuous variable such as time of day? Wouldn't averaging work (regardless of the parity of the members)?
- jobigoud 7y agoI think it's assuming you have no idea of the time and one of the clocks may be very wrong, like several hours off. So you'd have two clocks close to each other and one far off.
- ComputerGuru 7y agoYessir.
- 6nf 7y agoSource?