Action and Reaction
The world is composed of actions and reactions. Every action is paired with a reaction of some sort. In a physics sense, these are equal, the action force is met with equal reaction force. On a perceptual level, one event can have widespread reaction. For example, if you drop a pebble into the center of a still lake, the ripples extend far beyond the point where the pebble fell. Scientifically, we know the force creating the ripples is the same as the force of the falling rock. Visually, we see the ripples as being much more far reaching than the impact area.
