The same method should also be adopted in replying to those who ask, in the terms of Zeno's argument, whether we admit that before any distance can be traversed half the distance must be traversed, that these half distances are infinite in number, and that it is impossible to traverse distances infinite in number or some put the same argument in another form, and would have us grant that in the time during which a motion is in progress we should first count the half motion for every half distance that we get, so that we have the result that when the whole distance is traversed we have counted an infinite number, which is admittedly impossible.