Gini coefficient
A measure of income inequality, which has significantly increased in the United States, indicating a highly unequal society despite increased college education rates.
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Videos Mentioning Gini coefficient

Sebastian Junger — Seeking Freedom and Reordering Your Place in the World | The Tim Ferriss Show
Tim Ferriss
A number developed by an Italian economist in the early 1900s, ranging from 0 to 1, that measures the income gap between rich and poor within a society; higher numbers indicate greater inequality.

The State of the World: A Conversation with Dambisa Moyo (Episode #257)
Sam Harris
A measure of inequality where both the US and China have a similar coefficient of around 0.42, despite different economic and political systems.

MIT Open Learning Salon: Closing the Opportunity Gap from Language to Reading
MIT Open Learning
An objective measure of income inequality within a society, used to compare the US to other nations, highlighting the US's high level of inequality.

Secret History #7: Death by Meritocracy
Predictive History
A measure of income inequality, which has significantly increased in the United States, indicating a highly unequal society despite increased college education rates.

E27: The Great Inflation Debate, Amazon gets spicy on Twitter, rethinking supply chains & more
All-In Podcast
A measure of inequality discussed in the context of inflation and economic policy, with limitations noted.

America's Inequality Score Is 0.01 Away From The Number That Caused The Gilded Age To Collapse
Tom Bilyeu
A measure of inequality, which peaked at 0.87 in 1890 during the Gilded Age and is currently at 0.86 in the US.