1. Unconscious Incompetence: Complete novice. Unaware of your own incompetence.
2. Conscious Incompetence: Aware of your own incompetence.
3. Conscious Competence: Developed competence at the craft, but execution requires significant conscious effort.
4. Unconscious Competence: Sprezzatura. Extreme competence executed without conscious effort.

Four Stages of Competence