70%

apollochil

一部高档手机，70%的功能都是没用的。

一款高档轿车，70%的速度都是多余的。

一幢豪华别墅，70%的面积都是空闲的。

一个事业单位，70%的人都是混日子的。

一把美女情人，70%都是帮着别人养的。

一条微博，70%的人都是光看不转的。。。

silicon_beaver

It's well-known 2-8 rules.
80% of a company's profit was gained by 20% employees.

silicon_beaver

link

80-20 rule

In economics
......
The original observation was in connection with population and wealth. Pareto noticed that 80% of Italy's land was owned by 20% of the population.[4] He then carried out surveys on a variety of other countries and found to his surprise that a similar distribution applied.

In business

The distribution shows up in several different aspects relevant to entrepreneurs and business managers. For example:

    80% of your profits come from 20% of your customers
    80% of your complaints come from 20% of your customers
    80% of your profits come from 20% of the time you spend
    80% of your sales come from 20% of your products
    80% of your sales are made by 20% of your sales staff[10]

Therefore, many businesses have an easy access to dramatic improvements in profitability by focusing on the most effective areas and eliminating, ignoring, automating, delegating or re-training the rest, as appropriate.

In software

In computer science and engineering control theory such as for electromechanical energy converters, the Pareto principle can be applied to optimization efforts.[11] For example, Microsoft noted that by fixing the top 20% of the most reported bugs, 80% of the errors and crashes would be eliminated.[12]
[edit] Other applications

Mathematical notes
......

面瓜

人生，70%的时间是没用的，
所以早点去死吧~

ppteam

LOL

源济

风清扬

SpringMountain

sunnysunny

一把美女情人，70%都是帮着别人养的。