One influential strand in contemporary philosophy is quite explicit in claiming that analytic intuitions play a central role in philosophy. Inspired by David Lewis, and led by Frank Jackson and David Chalmers, this is widely known as the “Canberra Plan”. On this conception, philosophy starts with an initial analysis of concepts employed by everyday thought, such as free will, say, or knowledge, or moral value, or conscious experience. Once this stage has been completed, philosophy can then turn to “serious metaphysics” to demonstrate how a limited number of ingredients (for example, physical ingredients) might satisfy these everyday concepts. This second stage is likely to appeal to synthetic a posteriori scientific knowledge about the fundamental nature of reality. But the purely analytic first stage, according to the Canberra plan, also plays an essential part in setting the agenda for the subsequent metaphysical investigation.(Jackson 1998, Braddon-Mitchell and Nola 2009, Chalmers 2012.)