It is a poor idea to try improving at archery without ever seeing where your arrows land. Nevertheless, many learning systems may not build in feedback. For instance, more experienced clinical psychologists do not produce better client outcomes than less experienced clinicians. This is because the structure of the professional system does not deliver reliable, objective feedback about patient outcomes. It is hard for the clinicians to learn what works. They are left to make their own judgments, which may be biased toward seeing success rather than places to improve (Saptya, Riemer, & Bickman, 2005).