Gary L. Drescher is a scientist in the field of artificial intelligence (AI), and author of multiple books on AI, including Made-Up Minds: A Constructivist Approach to Artificial Intelligence. His book describes a theory of how a computer program might be implemented to learn and use new concepts that have not been programmed into it. It introduces the Schema Mechanism, a general learning and concept-building mechanism inspired by Jean Piaget's account of human cognitive development. The Schema Mechanism is intended to replicate key aspects of cognitive development during infancy. It takes Piaget's theory of human development as source of inspiration for an artificial learning mechanism; and it extends and tests Piaget's theory by seeing whether a specific mechanism that works according to Piagetian themes actually exhibits Piagetian abilities. In 2001 and 2002, Drescher was a visiting fellow at the Center for Cognitive Studies at Tufts University, which is directed by the American p