On the Pareto law and its conclusions
In this topic, we want to touch the so-called. of the law (or principle) Pareto . In a general formulation, this law sounds like this:
“20% of efforts give 80% of the result, the remaining 80% of efforts give the remaining 20% of the result”.
This law applies to many areas of human activity; for example, 80% of profit brings 20% of the range, and the remaining 4/5 of the range brings 20% of profit; 20% of the knowledge gained in school will be useful in later life, and 80% do not; 20% of the time will be spent on design, and the remaining 80% will be spent on coordination with the customer; etc. At the same time, the specific distribution (80/20) is not important here, there can be almost any numbers. The meaning of the Pareto law is that in complex systems, not all of the existing factors are equivalent and make an unequal contribution to the final result.
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However, we are not interested in the Pareto law itself, but in the main conclusion that follows from it. Unfortunately, this is the part that very many do not understand. Namely: 20% of efforts bring 80% of results ONLY in the presence of the remaining 80% of efforts that will bring the missing 20% of the result. Pareto's law can not be canceled, you can only try to change the 80/20 ratio for the better.
Let me explain by example. 9 out of 10 (and maybe more) parents are sure that the school does not teach anything useful, and the knowledge given there will absolutely not be useful for their children in later life. 10 out of 10 students think the same about the university program. However, following the Pareto law, one can easily notice that the removal from the school curriculum of 80% of “unnecessary” subjects will only lead to the fact that the remaining 20% will be divided exactly in the same (and even worse) ratio into “necessary” and "; only now the amount of knowledge will decrease accordingly. In the same way, if you remove from the range 80% of goods that bring 20% of the profits, then the remaining 1/5 of the range will again be divided according to the same Pareto law.
The main conclusion that we want to make here is the following: no complex system will be able to achieve such a state in principle when there will not be wasted efforts; 80% of efforts are spent not just like that, but for the remaining 20% to bring results. We need to work not over discarding the “unnecessary”, but over changing the ratio in the Pareto law for our particular situation.
“20% of efforts give 80% of the result, the remaining 80% of efforts give the remaining 20% of the result”.
This law applies to many areas of human activity; for example, 80% of profit brings 20% of the range, and the remaining 4/5 of the range brings 20% of profit; 20% of the knowledge gained in school will be useful in later life, and 80% do not; 20% of the time will be spent on design, and the remaining 80% will be spent on coordination with the customer; etc. At the same time, the specific distribution (80/20) is not important here, there can be almost any numbers. The meaning of the Pareto law is that in complex systems, not all of the existing factors are equivalent and make an unequal contribution to the final result.
')
However, we are not interested in the Pareto law itself, but in the main conclusion that follows from it. Unfortunately, this is the part that very many do not understand. Namely: 20% of efforts bring 80% of results ONLY in the presence of the remaining 80% of efforts that will bring the missing 20% of the result. Pareto's law can not be canceled, you can only try to change the 80/20 ratio for the better.
Let me explain by example. 9 out of 10 (and maybe more) parents are sure that the school does not teach anything useful, and the knowledge given there will absolutely not be useful for their children in later life. 10 out of 10 students think the same about the university program. However, following the Pareto law, one can easily notice that the removal from the school curriculum of 80% of “unnecessary” subjects will only lead to the fact that the remaining 20% will be divided exactly in the same (and even worse) ratio into “necessary” and "; only now the amount of knowledge will decrease accordingly. In the same way, if you remove from the range 80% of goods that bring 20% of the profits, then the remaining 1/5 of the range will again be divided according to the same Pareto law.
The main conclusion that we want to make here is the following: no complex system will be able to achieve such a state in principle when there will not be wasted efforts; 80% of efforts are spent not just like that, but for the remaining 20% to bring results. We need to work not over discarding the “unnecessary”, but over changing the ratio in the Pareto law for our particular situation.
Source: https://habr.com/ru/post/68232/
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