He has published a number of articles on epistemology (that's the study of human knowledge in its many dimensions), but he also published an essay, "Upon Further Review," in the 2008 book Football and Philosophy: Going Deep (The University Press of Kentucky). In his essay, Smith argues that "there is no middle ground to take regarding instant replay. Either all plays are reviewable or none are, and in either case, the change to the game need not be that dramatic." Indeed, the philosopher has a point.