It 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. This phenomenon is called the butterfly effect. The butterfly effect was put forward by meteorologist Lorenz 1963. Amazon basin in South America? Butterflies in the tropical rain forest, occasionally flapping their wings, may cause a tornado in Texas in two weeks.

The reason is that the movement of butterfly wings leads to the change of the surrounding air system, producing weak airflow, which in turn will cause the corresponding change of the surrounding air or other systems, causing a chain reaction, which will eventually lead to great changes in other systems. This effect shows that the result of the development of things is extremely sensitive to the initial conditions, and the smallest deviation of the initial conditions will cause great differences in the results. Butterfly effect is a concept in chaos theory. It refers to the dependence on the sensitivity of initial conditions. Small differences at the input end will quickly amplify to the output end. Butterfly effect is ubiquitous in economic life.

The "butterfly effect" theory proves China's interpretation of The Book of Rites more than 300 years ago by empirical means: "The Book of Changes says,' A gentleman is cautious at the beginning, but a tiny difference makes a thousand miles wrong.' The ancients believed that small changes would have a great impact on the future, so they were obsessed with Wang Fu to change the fate of the future.

In 2003, a suspected case of mad cow disease was found in the United States, which immediately brought a devastating hurricane to the newly recovered American economy. It was the unfortunate mad cow that flapped the butterfly's wings. First, the US beef industry, with a total output value of US$ 654.38+0.75 billion and employment of 654.38+0.4 million, was hit. As the main feed source of cattle owners, the American corn and soybean industries have also been affected, and their futures prices have shown a downward trend.

However, in the end, the decline of American consumers' confidence in beef products contributed to the biggest loss of the "mad cow disease hurricane". In today's globalization, this panic not only caused the depression of domestic catering enterprises in the United States, but also spread to the whole world. At least 1 1 countries have declared an emergency ban on the import of American beef, and even the residents in China and Guangdong, who are far away from the other side of the ocean, stay away from western-style restaurants. This is reminiscent of bird flu at that time. Avian influenza, which was first discovered in individual countries, quickly spread all over the world. Even in areas or countries where bird flu has not been found, people will "talk about the color change of chickens."