While Averroes’ work is often considered to represent the culmination of the method of Aristotelian demonstration in Arabic philosophy, a short passage of hisLong Commentaryon Aristotle'sMetaphysicsΓ.2 emphasizes the prominence of dialectic and calls for a re-examination of dialectic and demonstration in Averroes’ philosophical works. In this passage Averroes describes dialectic as an acceptable form of philosophy and the dialectician as a kind of scientist. In putting dialectic and demonstration on an equal, or nearly equal footing, Averroes seems to go against his own account of the dialectical and demonstrative classes of people in theDecisive Treatise. Moreover, this interpretation ofMetaphysicsΓ.2 also contradicts Averroes’ explanation of the same passage in theMiddle Commentaryon theMetaphysicsas well as Aristotle's own description of dialectic throughout theMetaphysics. That is, in theLong Commentaryon theMetaphysics, Averroes departs from his earlier views, and describes dialectic as a necessary part of metaphysics, even though the centrality of dialectic argumentation could call into question the entire project of metaphysics and consequently of the sciences whose demonstrations rely on metaphysical ground,i.e., all sciences. Averroes does not emphasize this view, but its presence is nevertheless unambiguous.