The “butterfly effect” is a way of describing how large systems like the weather are impossible to predict with total accuracy because there are too many unknown variables to track with accuracy. The term describes how changes as small as the flap of a butterfly’s wings can affect large, complex, distant, and apparently unrelated systems. 

 

The “butterfly effect” is a way of describing how large systems like the weather are impossible to predict with total accuracy because there are too many unknown variables to track with accuracy. The term describes how changes as small as the flap of a butterfly’s wings can affect large, complex, distant, and apparently unrelated systems.