I spent a number of years working as a test technician. Something like this would NOT be caught. It would be great if something could be tested with 100% certainty but it's simply not possible. That's one reason why redundancy is used in critical situations.
I get it. It seems that even the parts themselves have their QC check after manufacturing not all gets tested.
You'd think that redundancy from start to finish will bring out the defect before the market.
Still the maker Super Flower has such a good rep that getting a defective product from them was a surprise because of a small percentage that gets through.
I still stand by what I said about the workers being people and not infallible.
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