"Merely by existing and evolving in time - by existing - any physical system registers information, and by evolving in time it transforms or processes that information"
About this Quote
The subtext is a challenge to older hierarchies of explanation. Matter and energy stop being the primary nouns; state, transformation, and informational constraints become the real plot. That reframing makes a certain kind of modern ambition feel natural: if the universe computes by existing, then building quantum computers isn't inventing a new category of thing so much as learning to steer what nature is already doing. It's also an implicit rebuke to the idea that "information" is just a metaphor imported from computer science. Lloyd flips the direction of influence: computation is not an analogy for physics; physics is computation's substrate.
Context matters here. Lloyd is a key voice in quantum information science, a field that treats measurement, entanglement, and thermodynamics as informational phenomena. This line reads like a mission statement for that worldview, one that collapses boundaries between "physical law" and "algorithm". The rhetorical trick is its simplicity: by defining computation as state-plus-change, he makes the claim hard to argue with, and easy to extend.
Quote Details
| Topic | Science |
|---|---|
| Source | Programming the Universe: A Quantum Computer Scientist Takes On the Cosmos — Seth Lloyd (2006). Quote appears in the book where Lloyd argues that physical systems register and process information by existing and evolving. |
| Cite |
Citation Formats
APA Style (7th ed.)
Lloyd, Seth. (2026, January 16). Merely by existing and evolving in time - by existing - any physical system registers information, and by evolving in time it transforms or processes that information. FixQuotes. https://fixquotes.com/quotes/merely-by-existing-and-evolving-in-time-by-102954/
Chicago Style
Lloyd, Seth. "Merely by existing and evolving in time - by existing - any physical system registers information, and by evolving in time it transforms or processes that information." FixQuotes. January 16, 2026. https://fixquotes.com/quotes/merely-by-existing-and-evolving-in-time-by-102954/.
MLA Style (9th ed.)
"Merely by existing and evolving in time - by existing - any physical system registers information, and by evolving in time it transforms or processes that information." FixQuotes, 16 Jan. 2026, https://fixquotes.com/quotes/merely-by-existing-and-evolving-in-time-by-102954/. Accessed 12 Feb. 2026.




