Five Orders of Ignorance

Five Orders of Ignorance (Phillip Armour, 2000s) – a framework for distinguishing among levels of ignorance in the contexts of software development, knowledge management, and learning strategies. The levels are:
  • Zero Order Ignorance (0OI; Lack of Ignorance) – You know something and can apply that knowledge (Known Knowns).
  • First Order Ignorance (1OI; Lack of Knowledge) – You don’t know something, but you know that you don’t know it (Known Unknowns).
  • Second Order Ignorance (2OI;  Lack of Awareness) – You don’t know that you don’t know something (Unknown Unknowns).
  • Third Order Ignorance (3OI; Lack of Process) – You don’t know how to find out what you don’t know.
  • Fourth Order Ignorance (4OI; Meta-Ignorance) – You don’t know about the Five Orders of Ignorance – or that ignorance is structured at all.


Please cite this article as:
Davis, B., & Francis, K. (2025). “Five Orders of Ignorance” in Discourses on Learning in Education. https://learningdiscourses.com.


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