"It ain't ignorance that causes all the trouble in this world. It's the things people know that ain't so"
About this Quote
The subtext is especially pointed coming from an inventor. Armstrong built foundational radio technology, a domain where invisible forces get translated into certainty through instruments, standards, and patents. In that world, error doesn’t announce itself as ignorance; it dresses up as accepted doctrine: a measurement you trust, a theory that became habit, an industry consensus convenient for the powerful. “The things people know that ain’t so” is a swipe at institutionalized misinformation: beliefs stabilized by authority, repetition, and self-interest.
Context sharpens the intent. Armstrong’s career unfolded amid corporate warfare over intellectual property, with RCA and others shaping not just markets but narratives about who invented what and what technology was “necessary.” In such battles, the most destructive force isn’t the novice who lacks knowledge; it’s the executive, regulator, or competitor whose certainty is subsidized by money and momentum. Armstrong’s sentence is a compact warning about progress: it’s less a march forward than a constant audit of what we’ve mistaken for fact.
Quote Details
| Topic | Knowledge |
|---|---|
| Source | Will Rogers — quote listed on Wikiquote: "It ain't ignorance that causes all the trouble in this world. It's the things people know that ain't so." |
| Cite |
Citation Formats
APA Style (7th ed.)
Armstrong, Edwin. (2026, January 14). It ain't ignorance that causes all the trouble in this world. It's the things people know that ain't so. FixQuotes. https://fixquotes.com/quotes/it-aint-ignorance-that-causes-all-the-trouble-in-170911/
Chicago Style
Armstrong, Edwin. "It ain't ignorance that causes all the trouble in this world. It's the things people know that ain't so." FixQuotes. January 14, 2026. https://fixquotes.com/quotes/it-aint-ignorance-that-causes-all-the-trouble-in-170911/.
MLA Style (9th ed.)
"It ain't ignorance that causes all the trouble in this world. It's the things people know that ain't so." FixQuotes, 14 Jan. 2026, https://fixquotes.com/quotes/it-aint-ignorance-that-causes-all-the-trouble-in-170911/. Accessed 13 Feb. 2026.














