One of the mysteries of human existence is the fact that you do not fly apart into a cloud of atoms and molecules but instead hold together as a living, breathing, thinking organism. It is said that we live on the edge of chaos, because the human body has adapted to counter an enormous range of accidents, mistakes, wounds, illnesses, and stresses that would cause a non-living system to be wrecked.
A simple example is your joints. You bend and unbend your fingers hundreds of times a day. Take a bar of steel and bend it hundreds of times. It will break, which your fingers don’t. In fact, they get better at whatever they are doing, such as practicing the piano, a repeated activity that creates more order even though playing the piano or violin demands unending movements that look random if you happen to be deaf.
The study of chaos has progressed far enough that you can take any phenomenon, from the weather to a beating heart, traffic patterns to brain waves, and study it as the contest between order and chaos. Your life depends on the predictable (orderly) sequence of events that produces a healthy heartbeat, and if the sequence gets out of sync, the heart can go into irregular activity anywhere from a benign irregular heartbeat (arrhythmia) to a random convulsion (fibrillation) that proves fatal.