The choices of individual particles in the system are narrowly limited. If all Americans could stand on each others shoulders and link up this way form a line toward the moon, the line would reach the moon. Assume each link is 5 feet. If all people on earth were to form such a line, it would form a line reaching 1/5 the way to Mars at its closest approach this summer. If everybody just stood around in a formation resembling a beach scene, no one would reach anywhere.
-Update of Bucky's Nine Chains.