"A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective"
About this Quote
The second half turns the knife. A hypothesis is “guilty” because novelty is a kind of social crime. New ideas arrive already burdened with suspicion, not because skepticism is bad, but because communities (including scientific ones) have immune systems. Teller’s phrasing is deliberately unfair in a revealing way: hypotheses aren’t “found true,” they’re “found effective.” That utilitarian pivot nods to the messy reality of physics, where models earn their keep by predicting, engineering, and surviving contact with the world. It’s also Teller, the hydrogen bomb architect and Cold War hawk, talking: a man steeped in the politics of expertise, where “effectiveness” can mean technological success long before moral consensus catches up.
The subtext isn’t anti-science; it’s anti-complacency. Teller warns that orthodoxy can be lazy, and innovation can be punished for arriving out of turn. The irony is that both instincts are necessary: “facts” need perpetual cross-examination, and hypotheses need skepticism without becoming a hazing ritual. His aphorism works because it admits the human drama inside scientific method: credibility, gatekeeping, and the anxiety of being wrong.
Quote Details
| Topic | Science |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Teller, Edward. (2026, January 17). A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective. FixQuotes. https://fixquotes.com/quotes/a-fact-is-a-simple-statement-that-everyone-25457/
Chicago Style
Teller, Edward. "A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective." FixQuotes. January 17, 2026. https://fixquotes.com/quotes/a-fact-is-a-simple-statement-that-everyone-25457/.
MLA Style (9th ed.)
"A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective." FixQuotes, 17 Jan. 2026, https://fixquotes.com/quotes/a-fact-is-a-simple-statement-that-everyone-25457/. Accessed 12 Feb. 2026.











