 The ‘traditional’ view of truth and bivalence in Aristotle is put forward in an anonymous early twelfth-century commentary on De interpretatione, edited by M. Dal Pra, which is often, and probably mistakenly, attributed to Abelard. Applying Boethius’s distinction between definitely and indefinitely true statements, the author argues that future contingent statements are merely disjunctively true or false (tantum sub disjunctione); 100.13–19; 112.8–113.3). They are true-or-false.