How many of us have gone to a seminar and not taken a single note in our agility notebooks. I'm guilty.
How often have we gone to class, had a lesson, gone home, and the next day said, I screwed up in "fill in blank" and will spend 3 sessions today working on it. I know that often, I go home and totally blank out on what I did.
When I train with Moe and Nancy, they encourage us to write things down. At first I thought, why, hey, I'm doing this for fun. But now I realize that documentation tracks progress. Without keeping track, often we don't improve in the little things.