Renato Renner
Quantum information theorist and professor at ETH Zurich known for work on foundations of quantum mechanics, quantum cryptography, and thought experiments probing the consistency of quantum theory.
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Mar 30, 2026 • 3h 26min
Renato Renner: Quantum Mechanics Contains Its Own Contradictions
Renato Renner, a quantum information theorist at ETH Zurich who probes the foundations of quantum mechanics, explains a theorem showing quantum theory can be internally inconsistent. He discusses Wigner’s-friend style paradoxes, recursive consistency checks, the three assumptions behind his no-go result, and links to black holes and quantum reference frames. The conversation also touches on emotional and practical fallout for researchers.
