ButterflyEffect means that in a dynamic system, small changes in initial conditions can drive a long-term huge chain reaction of the whole system. This is a chaotic phenomenon.

The development of everything has definite numbers and variables. The development process of things has laws to follow, but there are also unpredictable "variables", which are often counterproductive. A small change can affect the development of things, indicating that the development of things is complex.

American meteorologist Edward. Lorenz analyzed this effect in the paper submitted to the New York Academy of Sciences in 1963.