I believe Goldratt suggested something like "ask why until the answer is a feeling" which is much in the same vein as the five whys. For anyone wanting to learn

I believe Goldratt suggested something like "ask why until the answer is a feeling" which is much in the same vein as the five whys. For anyone wanting to learn tactical approaches to root cause analysis, lookup Goldratt and ”reality tree", profound life/career/wealth changing stuff.