What are the rules in life?

It refers to the phenomenon that the stronger the strong, the weaker the weak, which is widely used in social psychology, education, finance, science and other fields. It is a common term used by sociologists and economists, which reflects the polarized social phenomenon. The rich are getting richer and the poor are getting poorer.

2. Watch theorem

It means that owning more than two watches can't help people to judge the time more accurately, but it will cause confusion and make people who look at the watch lose their judgment on the time. That is, everyone can't choose two different codes of conduct or values at the same time, otherwise that person's behavior will fall into chaos.

3. Unworth

The most intuitive expression is: what is not worth doing is not worth doing well. This law reflects people's psychology. If a person is engaged in something that he thinks is not worth it, he will often take a cynical and perfunctory attitude. Not only is the success rate small, but even if you succeed, you won't have much sense of accomplishment.

4. Zero-sum game principle

The reason why people pay extensive attention to it is mainly because people find that situations similar to "zero-sum game" can be found in all aspects of society, and the bitterness and bitterness of losers are often hidden behind the glory of winners.

Interesting mathematical law:

1, the difference between any number with two digits or more and the new number formed by the inversion of this number can be divisible by 9.

2. For a positive integer, if it is odd, multiply it by three plus one; If it is an even number, divide by two; In this way, you can always get the cycle of 1, 4,2, 1.

3. For any three-digit number, subtract the number obtained from the number arranged from the smallest to the largest, continue this process, and finally get 495.