"People don't understand computers. Computers are magical boxes that do things. People believe what computers tell them"
About this Quote
The sting is in the final clause: “People believe what computers tell them.” Not “people trust computers,” which would sound like an individual choice, but “believe,” the verb of faith. Schneier is pointing at the cultural move where computational results inherit the prestige of math and engineering even when they’re built on messy human decisions: what data counts, what gets optimized, whose errors are tolerable, which trade-offs are hidden behind “default settings.” The machine’s authority becomes a shield for institutions: a denial letter, a risk score, a moderation ban, a “random” audit. Nobody decided; the system did.
Context matters: Schneier is a security thinker, and security is the discipline of adversarial reality. In that world, believing outputs is exactly how you get owned. The quote is a warning about social engineering at scale: if you can make a screen say it, you can make people do it. It also hints at why accountability keeps slipping away in tech. Magic can’t be interrogated, only appeased. Schneier’s real target is the comfort we take in outsourcing judgment to machines, then acting surprised when the machines reflect the incentives of whoever built them.
Quote Details
| Topic | Technology |
|---|---|
| Source | Help us find the source |
| Cite | Cite this Quote |
Citation Formats
APA Style (7th ed.)
Scheneier, Bruce. (2026, January 15). People don't understand computers. Computers are magical boxes that do things. People believe what computers tell them. FixQuotes. https://fixquotes.com/quotes/people-dont-understand-computers-computers-are-125058/
Chicago Style
Scheneier, Bruce. "People don't understand computers. Computers are magical boxes that do things. People believe what computers tell them." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/people-dont-understand-computers-computers-are-125058/.
MLA Style (9th ed.)
"People don't understand computers. Computers are magical boxes that do things. People believe what computers tell them." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/people-dont-understand-computers-computers-are-125058/. Accessed 3 Feb. 2026.






