(Review) 80/20 Principle

 1. Introduction

Engish Edition - The 80/20 Principle

Japanese Edition - 『人生を変える 80対20の法則』

The 80:20 rule is also known as Pareto principle (Wikipedia) .

In simple terms, it means that various things are made up in the ratio of 80:20.

For example...

80% of the total profit is made up of 20% of all products or all customers.

80% of the outcome of a negotiation is determined by 20% of the negotiation time.　

Let me rephrase these.

20% of the total profit is made up of 80% of all products or all customers.

20% of the outcome of the negotiation is determined by 80% of the negotiation time.

The bottom line is that even if you think you put in a lot of effort/resources, you are not getting great results, and even if you don't put in much effort or resources, you will get 80% of the results.

The book directly rejects the common belief that you will get equal results for the effort you put in, and claims that everything is not equal, but tends to be 80:20.

So I will write how to apply this principle to the teacher's context. 

2. class satisfaction or learning effectiveness and class preparation time

The first thing I want to clearly deny is that there is no correlation between class preparation time and satisfaction or learning effectiveness.

Have you ever had an experience where you spent a lot of time preparing for a class, but it didn't go so well? On the other hand, have you ever had an experience where you didn't prepare very well, but it went well good?

You can analyze in this way: 

1. Make a list of the activities and contents you did.
2. Rank the activities and contents that were good.
3. Calculate the amount of time you spent preparing for those activities that were good.

Probably the top 80% of good activities are as close as possible to 20% of the total time spent. If it is not, you can try to come up with 80% of the activities/content from 20% of the time.

It would be a waste of time to use 80% of your time for 20% of your effectiveness. Then it's obvious that it's more likely that you'll spend more time on the 20% that produces 80% of the results, and produce 160 percent of the results (if you calculate the time you spend at twice the rate).

3. the course you're offering and your preparation time

One of the difficulties of running a one-on-one class online is that you may have too many different courses and needs to meet, and the preparation time may be too much.

If you take the preparation time into account and convert it into an hourly wage, it might be too small...

In this case, we can think in this way:

1. Rank the courses/needs in order of profit.
2. Calculate the class preparation time for each course/need
3. Analyze what courses/needs are generating 80% of the profit with 20% of the time.

Then we can say that 20% of the courses/needs (i.e. profits) are generated with 80% of the preparation time. From a business perspective, that's inefficient...

If you spend twice as much time on the courses/needs that are generating 80% of the profit in 20% of the time, you can increase your profit up to 160%, in less time than ever before.

Not only Pareto's principle but it's often said that you should focus on your persona (the target to offer your products) in marketing. 

4. Summary

I was going to write about something other than the context of teachers, but I can't think of anything right now and I feel like I'm going to stop typing, so I'll leave it like this for now. (I may write more if I think of more)

This book is a must for anyone who wants to get the maximum benefit from the least amount of effort and resources, and for those who say "don't have" all the time. 

Thank you for reading🙇‍♂️