The Power Law

The few dominate the many (80/20 rule)

Examples

Wealth Distribution
Top 1% owns more than bottom 50%
City Populations
Few mega-cities, many small towns
Website Traffic
Google gets billions, most get dozens
Word Frequency
"The" appears more than most words combined
Music Streams
1% of artists get 90% of streams
Earthquakes
Millions of small, few catastrophic