What is Argyris double-loop learning?

Argyris double-loop learning is a concept in personal epistemology: Resistance to certain feedback signals it touches an important blind spot.

Example: Your manager says 'your technical work is strong, but people find you hard to collaborate with.' You immediately focus on the first clause — strong technical work — and mentally dismiss the second. You tell yourself the manager doesn't understand your communication style, or that your teammates are too sensitive. The speed of that dismissal is the signal. You didn't evaluate the feedback; you neutralized it. The collaboration issue could be the single most important thing limiting your career growth, and your defensive response just ensured you won't examine it.

This concept is part of Phase 24 (Feedback Loops) in the How to Think curriculum, which builds the epistemic infrastructure for feedback loops.