But can it be true that something, in this case motion, has happened, when it was never true to say of it ‘It is happening’? Yes, replies Diodorus (Sextus, 10.97–100): for example, ‘These men have married’ may be true despite the fact that there was never a time when it was true to say of them ‘These men are marrying,’ since they each married at a different time. This supporting argument, drawn from Diodorus’s logical arsenal, sits comfortably with the assumption that the staccato theory of moti