Quantum, Quantum Computing, Quantum Error Correction.
fifth also disagrees with the sixth, this must be ‘yes’ too. It is clear to see which magnets are in the majority: 1, 2, 3, 4, 6, 7, 8 and 9 all agree. Only 5 disagrees. The magnet 5 is therefore most likely an error. We rotate it so that it agrees with all the others, and our error is corrected. A