The Bottle of Marbles Analogy:
Assume you have a bottle containing four marbles, marbles A, B, C, and D, which move with Brownian motion (random motion) within the bottle. When marbles A, B and D collide at the same time a glow occurs and the marbles stick together for 24hrs before the glow ends and the marbles separate. Note that the collision of any marble to another leads to the marbles being stuck together for 24hrs.
