 In his commentary on On Interpretation chapter 9, Ammonius added two other determinist arguments to the famous ‘there will be a sea-battle tomorrow’ argument, making his commentary into a small treatise on determinism. The first of these was the ‘Reaper’ (131,20 ff.), an argument which Ammonius considered more ‘verbal’, which perhaps goes back to Diodorus Cronus and which greatly interested Zeno the Stoic: “if you will [that is, you are going to] reap, it is not the case that perhaps (takha) you will reap and perhaps you will not reap, but you will reap, whatever happens (pantōs); and if you will not reap, in the same way it is not that perhaps you will reap and perhaps you will not reap, but, whatever happens, you will not reap. But in fact, of necessity, either you will reap or you will not reap.” In consequence, Ammonius says, “the ‘perhaps’ is destroyed,” and with it the contingent. Against this, Ammonius argues that if the determinist intends ‘you will reap’ to be contingent, he has already lost his point, but if he intends it as necessary, he is taking for granted what he intends to prove; further, in that case, ‘will reap, whatever happens’ will be true, but the determinist cannot say ‘but in fact either you will reap or you will not reap’, since if one of these is necessary, the other is impossible. Sorabji (1998, 4–5) argues that ‘perhaps’ is ambiguous, marking either a hesitant statement about the future or a statement about present possibilities, and that the determinist argument plays on this ambiguity, something which he thinks Ammonius did not see.