Status Updates From To Forgive Design: Understa...

When complicated technology and complex professions and flawed individuals interact we can expect failure to follow. Indeed, the longer it does not the more likely the human component of the machines/people system will believe that it will never happen again. That attitude breeds complacency, which leads to a relaxation of guards of all kinds—technological, political, organizational, and psychological—against failure

Some technical flaws may be as innocuous as personality flaws are in the individuals who introduce them, but just as we come to ignore the annoying habits, tics, and traits of people with whom we become familiar and comfortable, so do we tend to ignore the idiosyncrasies of technological parts and systems that we work within and rely upon.

Most outright bridge failures do not follow months of obvious misbehavior. Rather, they follow times of much more subtle warning signs, which may or may not even be detected or detectable by the naked eye.

Some failures do become legendary, even if their cause remains somewhat uncertain. But it is the failure whose cause is so well established as to be virtually incontrovertible that should be the most widely studied—not just because it was a failure but because it holds a clear lesson.