Do you really know? What is the Fermi paradox?
Feb 17, 2026
A brisk look at the Fermi paradox and why a vast universe still feels empty. Brief history of Enrico Fermi and the question he posed. A quick tour of proposed explanations like rare intelligence, travel limits, or deliberate avoidance. A final nudge to think about what this means for civilization longevity and our future.
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The Core Contradiction
- The Fermi Paradox highlights a contradiction between the vast number of stars and the lack of evidence for extraterrestrial life.
- This tension forces us to reconsider assumptions about life's prevalence and detectability in the universe.
Fermi's Famous Question
- Enrico Fermi, a Nobel-winning physicist, first posed the paradox during a 1950 conversation at Los Alamos.
- His reputation and context (first nuclear reactor, Manhattan Project) lend weight to the question he raised.
Hart's Colonisation Argument
- Michael H. Hart revisited the paradox in 1975 and framed possible resolutions like rare intelligence or impractical interstellar travel.
- His colonisation argument implies that any spacefaring civilization could have spread across the galaxy already.