This chapter is about the dynamic perspective on science, which Kuhn developed in opposition to the static perspective. First, I will spell out how Kuhn built his new perspective by drawing the logical and philosophical implications of the rejection of foundationalism. Then, I will explain why the dynamic perspective is different and more fundamental than the model of science of SSR. The analysis of the relationship between his philosophical perspective, his work on the history of science, and his history-based model of science will make it clearer which parts of Kuhn’s thought are more susceptible to empirical testing than others. The chapter concludes with a discussion of Kuhn’s (unexpected) defence of so-called Whig history of science in some of his last writings.