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"Having one unrecoverable latchup a week isn't a big deal if your mission is 2 weeks long.Having one unrecoverable latchup a week isn't a big deal if your mission is 2 weeks long."

Unless it happens in your attitude control system or your command and control system, causing you to lose control of or communication with your spacecraft.

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I guess I didn't actually say so, but my implicit assumption was that you have a voting setup where a single failure isn't necessarily a problem

I think the assumption is that a redundancy scheme is in place. So you have your unrecoverable issue in some module of compute A, but compute B and C vote them down and life proceeds. The problem is when your mission is long enough that the same module gets hit in one of the other two units, and now you're in trouble.

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