Langton’s (1998) and Allais’ (2015) metaphysical interpretations of Kant’s idealism have given special relevance to Kant’s analysis of the inner/outer dichotomy in the Amphiboly of the Concepts of Reflection, for they agree that this dichotomy is key to correctly grasping Kant’s distinction between appearances and things in themselves. In this article I argue that Langton’s and Allais’ accounts of Kant’s analysis of the inner/outer dichotomy have major limitations, and therefore that the text should not be read in the way they propose. In order to show these limitations, I examine the overall structure of Kant’s argument in the Amphiboly. Furthermore, I aim to establish the contribution brought by the Amphiboly to the issue of noumenal knowledge and the nature of things in themselves. Langton’s and Allais’ accounts of the relation between appearances and things in themselves as the inner nature of things not only prove to be unwarranted, but indeed to some extent opposite to what I claim to be Kant’s actual stance on things in themselves in the Amphiboly.
