"On two occasions I have been asked, 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question"
About this Quote
The context matters. Babbage was building machines meant to remove human fallibility from calculation: the Difference Engine and, more ambitiously, the Analytical Engine. In a world where hand calculation powered navigation, engineering, finance, and empire, errors weren’t cute; they were costly. So his impatience is practical, not just pedantic. He’s defending a new kind of authority: not the authority of the expert who “knows,” but of a process that, if correctly specified, will be reliably dumb in the best way.
The subtext is sharper: people want machines to be wise. They want them to “understand” what we meant, to rescue us from sloppy thinking, biased premises, or bad data. Babbage’s jab anticipates modern debates about algorithms and AI. The machine won’t redeem your mistakes; it will amplify them with confidence, speed, and the dangerous aura of objectivity.
Quote Details
| Topic | Witty One-Liners |
|---|---|
| Source | Unverified source: Passages from the Life of a Philosopher (Charles Babbage, 1864)
Evidence: Chapter V ("Difference Engine No. 1"), p. 67 (in the Wikisource scan; Page:Passages_from_the_Life_of_a_Philosopher.djvu/83). This is a primary-source passage in Charles Babbage’s own book. The quote appears in Chapter V and is shown on the validated scanned page labeled "CURIOUS QUESTIONS" in the... Other candidates (1) Charles Babbage (Charles Babbage) compilation81.4% two occasions i have been asked pray mr babbage if you put into the machine wrong figures will the right answers come... |
| Cite |
Citation Formats
APA Style (7th ed.)
Babbage, Charles. (2026, January 13). On two occasions I have been asked, 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. FixQuotes. https://fixquotes.com/quotes/on-two-occasions-i-have-been-asked-pray-mr-20113/
Chicago Style
Babbage, Charles. "On two occasions I have been asked, 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question." FixQuotes. January 13, 2026. https://fixquotes.com/quotes/on-two-occasions-i-have-been-asked-pray-mr-20113/.
MLA Style (9th ed.)
"On two occasions I have been asked, 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question." FixQuotes, 13 Jan. 2026, https://fixquotes.com/quotes/on-two-occasions-i-have-been-asked-pray-mr-20113/. Accessed 12 Feb. 2026.






