I have written a stack of Engineering Change Orders (ECO's) that would most likely be taller than the tree in my front yard over my career. That is in paper form. In digital form, much less.
I came across the book To Engineer is Human by Henry Petroski several years ago. Its an interesting read about how and why failures occur in engineering design.
As engineers we are often asked to review and fix designs that have not proven functional or durable in the field. Tools employed ranged from Root Cause Analysis to Failure Mode Effects Analysis (FMEA). This all being employed within the environment of Cost, Time and Performance.
Classic engineering failures such as the Space Shuttle, automobiles and suspension bridges are thoughtfully reviewed. With the current struggles of General Motors and Air Bag manufacturers, it might be time for a review of this great book.