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Covert Failure

A failure of a component or system that remains undetected until revealed by either proof testing or, more critically, once a demand is placed on the item to function as intended. 

I. Care is using destructive testing to reveal hidden stuff going on in the iceberg under the surface (latent defects, concealed conditions, lagging indicators)
Fig. I. Care is using destructive testing (and other creative means) to reveal the hidden stuff going on in the iceberg under the surface (latent defects, concealed conditions, lagging indicators, legacy problems, root causes, back-of-house problems, interval censoring, covert failures).

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