If we say that the mover in such cases moves something else at the same time, eg the air, and that this in being moved is also a mover, then it will similarly be impossible for this to be in motion when the original mover is not in contact with it or moving it: all the things moved would have to be in motion simultaneously and also to have ceased simultaneously to be in motion when the original mover ceases to move them, even if, like the magnet, it makes that which it has moved capable of being a mover.