This reminds of of two things: Toyota's '5 Whys' root cause analysis, don't just fix the manifestation of the problem, but keep asking why it happened until yo

This reminds of of two things: Toyota's '5 Whys' root cause analysis, don't just fix the manifestation of the problem, but keep asking why it happened until you get to the real cause. The NASA space shuttle programmers http://www.fastcompany.com/28121/they-write-right-stuff http://www.fastcompany.com/28121/they-write-right-stuff When they find a bug, they go to great lengths to find how and where in their process of programming this was able to happen, sometimes finding other bugs before they surface.