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Interesting that the dailymail looks and reads like the onion only it pretends to be for real:

The chips do not error check each other but instead perform exactly the same tasks, so that they can check the other for errors.




Also, according to the article there is only double redundancy. I thought critical systems like this always employed triple redundancy. It doesn't help too much if you detect a fault during launch and have to reboot both systems...




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