 The legacy of the arguments such as the Transcendental Deduction and the Refutation of Idealism includes not only Kant’s actual successes, but also a number of influential philosophical strategies: the now-standard tactic of arguing for concepts whose source is in the mind from universal and necessary features of experience; the idea of drawing significant philosophical conclusions from premises about self-consciousness alone; and the notion of a transcendental argument, which from an uncontroversial premise about our thought, knowledge or experience, reasons to a substantive and unobvious presupposition and necessary condition of this claim.