"0th Order Ignorance: Lack of Ignorance. I have 0OI when I (probably) know something.
1st Order Ignorance: Lack of Knowledge. I have 1OI when I don't know something. With 1OI we have the question in a well-factored form.
2nd Order Ignorance: Lack of Awareness. I have 2OI when I don't know that I don't know something.
3rd Order Ignorance: Lack of Process. I have 3OI when I don't know a suitably efficient way to find out I don't know that I don't know something.
4th Order Ignorance: Meta-ignorance. I have 4OI when I don't know about the Five Orders of Ignorance.
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