Reflections

- Hello, is this the math department?
- Yes, speaking. Who is calling?
- A politician.
- A politician? Nice of you to call! You do not call every day, so it is extra nice when you do. What may I do for you?
- I need a number.
- How is 5?
- No, that won’t do. I need a number for every country in the world.
- And 5 won’t do?
- The number should reflect how income or wealth is distributed in the country.
- I see.
- 0% means it is equally distributed and 100% that is far from it.
- To calculate such a number will not be easy.
- I don’t care.
- And it has to be taken with a grain of salt. 
- I don’t care.
- In some cases it may be misleading.
- I don’t care.
- Then I have the number for you.
- Really? That is great!
- The number is called the Gini coefficient
- What is the Gini number for Denmark and Namibia?
- 23.2% and 70.7%.
- That makes sense. I guess income is more evenly distributed in a Nordic country than one in Africa. 
- Glad the number fits in with your prejudices.
- How is the Gini number in the US evolving? Is it going up or down?
- You don’t want to know.

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