In this context, Timothy Williamson has recently argued that the traditional distinction between a priori and a posteriori knowledge is less than clear-cut, and in particular that it breaks down in connection with the intuitions on which philosophers rely. In Williamson’s view, there is a distinctive philosophical method in which intuitive judgements play a central role, but there is no warrant for classifying the relevant intuitions as a priori rather than a posteriori (Williamson 2013).