 There is a very real sense in which Kant’s positive metaphysics in the Critique of Pure Reason is essentially an elaboration of his theory of judgment: “it is not at all [traditional] metaphysics that the Critique is doing but a whole new science, never before attempted, namely the critique of an a priori judging reason” (10: 340). This results directly from the conjunction of the centrality thesis and the transcendental idealism thesis: judgment is the central cognitive activity of the human mind, and judgments are objectively valid and true if and only if the metaphysics of transcendental idealism is correct. In this section, the crucial connection between judgment and transcendental idealism will be spelled out in more detail.