The manifest world of our common lived experience is not shown to be mere maya or entangling illusion by being shown to be a world with many boundaries that correlate not with the metaphysical joints, but only with our deepest practical concerns. When those concerns stand the test of criticism, the boundaries marked by differences at the level of ordinary supervening facts are as “deep” as anything ever gets.

Mark Johnston, ‘Reasons and Reductionism’, The Philosophical Review, vol. 101, no. 3 (July, 1992), p. 618