Addresses the question: If an intellectual change is truly fundamental, how can it be socially comprehensible? Claims that the question is particularly pressing in the case of Darwin's "Origin." Argues that the answer lies in an understanding of how scientific revolutions depend on continuity with an existent cultural grammar. (JD)

Uses test questions from the Basic Economics Test (BET) to reveal that elementary students are capable of understanding economics concepts. Maintains that neither ethnic background nor parental income makes a difference in economic learning. The most statistically significant determinant of improved scores was the extent to which a concept was…