Forgetting as a friend of learning
Implications for teaching and self-regulated learning
"It is natural to think that learning is a matter of building up skills or knowledge in one’s memory and that forgetting is a matter of losing some of what was built up. From that perspective, learning is a good thing and forgetting is a bad thing. The relationship between learning and forgetting is not, however, so simple, and in certain important respects is quite the opposite: Conditions that produce forgetting often enable additional learning, for example, and learning or recalling some things can contribute to forgetting other things."