Or yet another example: on being confronted with a complete machine made up of six stones in the right hand pocket of my coat (the pocket that serves as the source of the stones), five stones in the right hand pocket of my trousers, and five in the left hand pocket (transmission pockets), with the remaining pocket of my coat receiving the stones that have already been handled, as each of the stones moves forward one pocket, how can we determine the effect of this circuit of distribution in which the mouth, too, plays a role as a stone sucking machine?