The ubiquitous principle [0]: What is the principle?

I guess there should be many people in my blog who have heard of the principle (if you have never heard of it before, your knowledge is too narrow ). However, there are a lot of people who know the principle, but they won't (or
Is not good at) use. The direct consequence is that you have spent a lot of time and energy on various things, but have little return. Since this principle is very practical, I plan to write a series to talk about its related
Topic.

★What is the principle?
By convention, let's first talk about what is the principle (if you already know the principle, skip this part ). The 80/20 principle (also known as the principle and the parreto principle) was first proposed by the Italian economist parreto. For specific definitions, see here. In general, it is the asymmetry of cause and effect. 20% leads to 80% of results, while other 80% results only produce 20% of results. Of course, the ratio of the second and eighth openings mentioned here is not absolute. It is possible to start from sanqi to YIJIU.
In order to give people who do not know it a bit more perceptual knowledge, let me give you a few examples:
A few rich people grasp most of the wealth of society (parreto discovered this principle from the distribution of wealth)
Most of the company's sales performance is created by a small number of sales personnel
Most developers only use a few programming languages, while a large number of programming languages are rarely used.
Most bugs are concentrated on a few developers.

★How to Use
　
First, the key to this principle is that it challenges traditional ideas. For example, when I was a child, the teacher often taught us to "pay for one cent ". In mathematical terms, payment and return are linearly related.
. Many people are influenced by this (possibly due to subconscious influence) and are used to average allocation of time and energy to deal with problems. As a result, I have invested a lot and have little return. Therefore, we need to apply the principle
First, you must change the mindset in your mind."Inequality"View the surrounding problems. (The key to changing the mindset is to rely on yourself. I can't help you too much)
Second, you must learn how to distinguish between importance and secondary importance. This is a methodology issue. I have written several posts related to this, such as "how to choose it technology books" and "Do the right thing ", later, I will continue to write related posts (some of which are included in this series), hoping to help everyone.
Finally, to give everyone a better impression, let's take a look at Steve Jobs's famous saying:
Every day, I look into the mirror and ask myself, "If today is the last day of my life, will I do what I plan to do today ?" If the answer is negative for several days in a row, then I must change it.

To facilitate reading, sort the directories of this series of posts as follows:
1. Application in software development
2. Management Application (Overview)
3. Application in management (how to find excellent development talents)
4. Management Application (how to motivate employees)
5 ,......

Http://program-think.blogspot.com/2009/02/80-20-principle-0-overview.html