At first his computer program predicted possible weather patterns. When Lorenz tried repeating a particular sequence, he started in the middle of his computer program and found a divergence in the original pattern. With a change in the pattern, it is impossible to predict the outcome. These configurations never vary from repeating patterns. Mathematically, chaos is a system governed by physical laws undergo transitions to an irregular form of behavior.
Small variations have profound effect.
The Florida presidential vote could have depended on me. I have gone through life taking people for their word. Lorenz stated that it is impossible to predict the weather accurately. However, this discovery led Lorenz on to other aspects of what eventually cam to be known as chaos theory. Chaotic systems qualitative study of unstable aperiodic behavior in deterministic nonlinear dynamic systems.