摘要:With the "revolutionary" changes in physical theory early in the 20th century came the recognition that conceptual change is a crucial component of major changes of theory. Various philosophers, Poincare, Hempel, Feyerabend, and Kuhn among them, have been concerned with the problem of how to characterize conceptual change in science. Two main views have emerged. Logical positivism characterized conceptual change in science as continuous and cumulative. Kuhn and Feyerabend have characterized it as discontinuous and non-cumulative.