Anna karenine Principle: jared diamond, an American scholar, has made a profound interpretation of Tolstoy. He said: "In order to be happy, marriage must be successful in many different aspects: sexual attraction, money knowledge, children's education, religious beliefs, three relatives and six relatives, and other major issues. As long as there are problems in all these basic aspects, it may ruin the marriage. " Diamond called this principle "Anna karenin principle", which actually illustrates a problem, that is, for most major events, success also means avoiding many individual and possible reasons for failure.

? However, this is not always the case, and the Anna Karelina principle also has its scope of application. For example, a domestic drama can only succeed if it has one of the following factors: political promotion, good plot, good actors, or the audience has no choice.

? Speaking of the scope of application, this is an interesting thing worth studying.