"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
Reality, in Lloyd's telling, is not a stage where information happens to be stored; it is a machine that cannot help but compute. The sly power of "merely" is the giveaway. He's stripping away the sci-fi varnish that makes "information processing" sound exotic and insisting it's banal: if a system has a state, it already "registers information". If it changes, it "processes" it. The intent is evangelical in the quietest way possible, translating physics into the grammar of computation without needing to invoke silicon, code, or human designers.
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.
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. |
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