  Diodorus’s fourth motion paradox appeals to the theory of minima once again. It assumes that a moving body, if there were one, would consist of a set of minima, and that the whole body would be moving if and only if a preponderance of its constituent minima were moving. The point of choosing minima as the relevant constituents is presumably (cf. Sextus Empiricus, Outlines of Pyrrhonism 3.76) to avoid the vicious regress that would threaten if everything moved by courtesy of the movement of a preponderance of its parts, which themselves moved by courtesy of the movement of their parts, and so on: minima, being defined precisely by their partlessness, provide the starting point from which composite motion—if there is such a thing—would be built up. The paradox asks us to imagine a body consisting of three minima, two moving plus one stationary. Thanks to this simple majority, the whole body is in motion. Hence if a further stationary minimum were now added to it, that could not be enough to halt its motion, being in a minority of 1 to the original 3, which, taken as a whole, have been assumed to be moving, and therefore preponderate. And stationary minima can go on being added to the body, one at a time, until it consists of 10,000 minima, only two of which are individually moving, and yet the whole body will, absurdly, nonetheless be moving, because of the ever-increasing preponderance of its moving parts.