Abraham Bibago on Dialectic and Doubt in Aristotle's Metaphysics B and Beyond

In his Commentary on Aristotle's Metaphysics and elsewhere, Abraham Bibago claims that metaphysics is entirely made up of demonstrative arguments. He is thus quite critical of dialectical arguments. To maintain this view, Bibago develops an account of Metaphysics B according to which the aporiai Aristotle mentions are doubts, solved through demonstrations. Bibago's description of these doubts as contradictions both of whose alternatives are supported by syllogisms, connects them to dialectical (non-demonstrative) arguments as discussed in the Hebrew Topics commentary tradition. Bibago distinguishes a demonstrative metaphysics from a dialectical imitation of metaphysics, which has a heavily ethical, and so religious, dimension.