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Science Quote by Murray Gell-Mann

"If we look at the way the universe behaves, quantum mechanics gives us fundamental, unavoidable indeterminacy, so that alternative histories of the universe can be assigned probability"

About this Quote

Gell-Mann is doing something sly here: he’s taking the most counterintuitive feature of modern physics and turning it into a philosophical permission slip, but with a scientist’s leash still on it. “Fundamental, unavoidable indeterminacy” isn’t just a description of quantum weirdness; it’s a boundary line. The universe, on this view, is not a clockwork story we could rewind and replay to get the same plot. Even with perfect knowledge, you don’t get a single inevitable timeline. You get a menu.

The key move is his phrase “alternative histories.” That’s not casual sci-fi flair; it nods to late-20th-century efforts to make quantum mechanics speak about the whole cosmos without smuggling in an external observer. In approaches like consistent/decoherent histories, the universe can be described as a bundle of possible narrative threads, each with probabilities attached. The subtext: physics doesn’t just predict outcomes, it assigns weights to competing “stories” about what happened and what could have happened.

Gell-Mann’s intent is also disciplinary: to domesticate indeterminacy. He’s not celebrating randomness as mystical freedom; he’s insisting it’s structured, calculable, and “unavoidable” precisely because the theory works. It’s a rebuke to deterministic nostalgia and a quiet defense of a modern scientific worldview where certainty is downgraded, not abandoned, and where explanation means managing probabilities rather than declaring fate.

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APA Style (7th ed.)
Gell-Mann, Murray. (n.d.). If we look at the way the universe behaves, quantum mechanics gives us fundamental, unavoidable indeterminacy, so that alternative histories of the universe can be assigned probability. FixQuotes. https://fixquotes.com/quotes/if-we-look-at-the-way-the-universe-behaves-28061/

Chicago Style
Gell-Mann, Murray. "If we look at the way the universe behaves, quantum mechanics gives us fundamental, unavoidable indeterminacy, so that alternative histories of the universe can be assigned probability." FixQuotes. Accessed February 2, 2026. https://fixquotes.com/quotes/if-we-look-at-the-way-the-universe-behaves-28061/.

MLA Style (9th ed.)
"If we look at the way the universe behaves, quantum mechanics gives us fundamental, unavoidable indeterminacy, so that alternative histories of the universe can be assigned probability." FixQuotes, https://fixquotes.com/quotes/if-we-look-at-the-way-the-universe-behaves-28061/. Accessed 2 Feb. 2026.

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Murray Gell-Mann (September 15, 1929 - May 24, 2019) was a Physicist from USA.

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