"Wouldn't it be as farfetched to call birth the cause of death as to call the cat's head the cause of the tail? Lifting the neck of a bottle implies lifting the bottom as well, for the "two parts" come up at the same time. If I pick up an accordion by one end, the other will follow a little later, but the principle is the same. Total situations are, therefore, patterns in time as much as patterns in space."