# today's lucky 10,000

> English word · Noun

## Definitions
1. A theoretical set of 10,000 people who learn something considered "common knowledge" for the first time.

## Etymology
Coined by American cartoonist, author and engineer Randall Munroe in 2012 in his webcomic xkcd, based on a calculation that given four million yearly births in the United States, about ten thousand people learn something that "everyone knows" every day.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/today-s-lucky-10-000