  To be sure, Kant thought that he could get more out of his transcendental arguments than just ‘best explanations’. He thought that he could get a priori (experience independent) knowledge out of them. Kant had a tripartite doctrine of the a priori. He held that some features of the mind and its knowledge had a priori origins, i.e., must be in the mind prior to experience (because using them is necessary to have experience). That mind and knowledge have these features are a priori truths, i.e., necessary and universal  (B3/4)[1].  And we can come to know these truths, or that they are a priori at any rate, only by using a priori methods, i.e., we cannot learn these things from experience (B3) (Brook 1993). Kant thought that transcendental arguments were a priori or yielded the a priori in all three ways. Nonetheless, at the heart of this method is inference to the best explanation. When introspection fell out of favour about 100 years ago, the alternative approach adopted was exactly this approach. Its nonempirical roots in Kant notwithstanding, it is now the major method used by experimental cognitive scientists.