Or as a simple rule for self-help, 20% of your effort makes up 80% of your success.

或者作為一個簡單的自助規則，20% 的努力會帶來 80% 的成功。

The principle was discovered by the Italian economist Vilfredo Pareto, who first realized that 20% of the pea pods in his garden were responsible for 80% of all the peas, and then that 80% of all the land in Italy was owned by just 20% of its people.

意大利經濟學家維爾弗雷多-帕累託（Vilfredo Pareto）發現了這一原理，他首先發現自己花園裡 20% 的豌豆莢結出了 80% 的豌豆，然後又發現意大利 80% 的土地只歸 20% 的人所有。

Over time, the principle became a valuable rule of thumb that allows our mind to understand all sorts of complex distributions, focus on the essentials, and prioritize what to do next.

隨著時間的推移，這條原則成為了一條寶貴的經驗法則，讓我們的大腦能夠理解各種複雜的分佈情況，專注於要點，並確定下一步工作的優先順序。

Business owners, for example, often realize that about 80% of a company's income comes from just 20% of the customers, and as a result, know who to give special attention to.

例如，企業主通常會意識到，公司約 80% 的收入僅來自 20% 的客戶，是以他們知道應該特別關注哪些客戶。

Constructors who find out that 20% of the hazards result in 80% of the injuries can take important precautions to eliminate risks.

建築商如果發現 20% 的危險會導致 80% 的傷害，就可以採取重要的預防措施來消除風險。

And software engineers who know that fixing the top 20% of the most reported bugs eradicates 80% of errors can spend their time on these top 20 and let the other 80% continue bugging people.

軟件工程師知道，修復報告最多的前 20% 的錯誤就能消除 80% 的錯誤，他們可以把時間花在這前 20% 的錯誤上，而讓其他 80% 的錯誤繼續困擾人們。

However useful the rule may be, Pareto himself warned against relying too much on the principle when he said, And so they look for and always find some theory which, a posteriori, makes their actions appear to be logical.

無論這條規則多麼有用，帕累託本人都警告人們不要過分依賴這條原則，他說："是以，他們尋找並總能找到某種理論，使他們的行為在事後看來合乎邏輯。

If that theory could be demolished scientifically, the only result would be that another theory would be substituted for the first one and for the same purpose.

如果能夠以科學的方式推翻這一理論，那麼唯一的結果就是用另一種理論來替代第一種理論，並達到同樣的目的。

What do you think of the 80-20 rule?

您如何看待 80-20 規則？

Where can it be applied?

它可以應用於何處？

And where do we need a more thorough analysis to fully understand what's going on?

我們需要對哪些方面進行更透徹的分析，以充分了解發生了什麼？

Share your thoughts in the comments below.

在下面的評論中分享您的想法。

But beware, 20% of the responses might make up 80% of the conversation.

但要注意，20% 的回覆可能會佔到談話的 80%。

If you like this video and want us to make more, subscribe to our channel or support us on Patreon.

如果您喜歡這段視頻並希望我們製作更多視頻，請訂閱我們的頻道或在 Patreon 上支持我們。