What is the butterfly effect? Let's talk about the discovery of Lorenz, a meteorologist at MIT. In order to forecast the weather, he solved the 13 equation simulating the earth's atmosphere by computer. In order to check the results more carefully, he took out an intermediate solution, improved the accuracy and sent it back. And when he came back to watch it after drinking a cup of coffee, he was surprised: it was a little short, but the result was a hundred thousand miles short! There was nothing wrong with the computer, so Lorenz decided that he had discovered a new phenomenon: "extreme instability to the initial value", namely "chaos", also known as "butterfly effect". The flapping of Asian butterflies will make a tornado worse than strong winds appear in the United States in a few months!

This discovery is so serious that scientists don't understand it, and several scientific journals also refuse to publish his articles, thinking that it is "contrary to common sense": if similar initial values are substituted into some equations, the results should be similar, how can they be far apart? The understanding of despair may be overall, but the butterfly effect is about the influence of "one thing" on the result, just as the calculated results will differ by a hundred thousand miles if only a little data is changed. The reason why the butterfly effect is fascinating, gripping and thought-provoking lies not only in its bold imagination and charming aesthetic color, but also in its profound scientific connotation and inherent philosophical charm. This is what makes people hard to understand.