In quantum mechanics, unlike classical probability which reflects incomplete knowledge of a system, probabilities are fundamental to the description of nature itself; they are not a measure of ignorance but an intrinsic feature of quantum theory, arising even when complete information about a quantum system is available.

factualpending

Speaker

Brian Cox

Evidence Quote

these probabilities are fundamental. They are fundamental to the description of nature...The probabilities are intrinsic to theory itself. And pretty much all of the intellectual challenges and the confusion around quantum mechanics comes from that very simple property.

Source

Brian Cox: The quantum roots of reality | Full InterviewBig Think
Created: 8/11/2026, 7:24:53 AM

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