World famous mathematical rules

1. Murphy's Law

In 1949, an Air Force captain engineer named Murphy thought that one of his colleagues was an unlucky guy, and inadvertently made a joke: "If something is likely to be messed up, ask him to do it and it will definitely be messed up." This sentence spread quickly and spread to all parts of the world. In the process of spreading, this joke gradually lost its original limitations and evolved into various forms. The most common one is "If something bad can happen, no matter how small the possibility, It will always happen and cause the greatest possible loss."

2. The 28/28 rule

In 1897, Italian economist Pareto studied various classes of British society in the 19th century. During the statistical analysis of wealth and income, it was found that 80% of social wealth is concentrated in the hands of 20% of people, while 80% of people only own 20% of social wealth. This is the "80/20 rule." The "80/20 rule" reflects an imbalance, but it is ubiquitous in society, economy and life. Attachment: Broken Windows Theory, etc.

3. Matthew Effect

4. Watch Theorem

5. Bucket Law

6. 250 Law The famous American salesman Ladd summed up the "250 Law" in the business war. He believes that behind every customer, there are roughly 250 relatives and friends. If you win the favor of one customer, it means you have won the favor of 250 people; conversely, if you offend a customer, it means you have offended 250 customers. This law effectively demonstrates the true meaning of "the customer is God". From this, we can get the following inspiration: We must take everyone around us seriously, because behind everyone, there is a relatively stable and large group.

7. The Law of Unworthiness The most intuitive expression of the Law of Unworthiness is: anything that is not worth doing is not worth doing well. This law seems to be simple, but its importance is often questioned by people. Forgetfulness. The law of unworthiness reflects people's psychology. If a person is engaged in something that he thinks is not worth doing, he will often maintain a cynical and perfunctory attitude. Not only is the success rate low, but even if you succeed, you won't feel much sense of accomplishment.

8. Zero-sum game

9. The law of wine and sewage

10. Kochner’s law There is a famous Kochner’s law in Western management. : If the actual number of managers is twice as many as the optimal number, the working hours will be twice as long, and the work cost will be 4 times as much; if the actual managers are 3 times as many as the optimal number, the working hours will be 3 times as long, and the work cost will be 4 times as much. The cost is 6 times more.