New Quantum Paradox Further Counters Sensible Assumptions About Reality

❝ That quantum mechanics is a successful theory is not in dispute. It makes astonishingly accurate predictions about the nature of the world at microscopic scales. What has been in dispute for nearly a century is just what it’s telling us about what exists, what is real. There are myriad interpretations that offer their own take on the question, each requiring us to buy into certain as-yet-unverified claims — hence assumptions — about the nature of reality…

❝ [An] experiment, designed by Daniela Frauchiger and Renato Renner, of the Swiss Federal Institute of Technology Zurich, involves a set of assumptions that on the face of it seem entirely reasonable. But the experiment leads to contradictions, suggesting that at least one of the assumptions is wrong. The choice of which assumption to give up has implications for our understanding of the quantum world and points to the possibility that quantum mechanics is not a universal theory, and so cannot be applied to complex systems such as humans.

RTFA. Have fun. I haven’t been involved with the microscopic [and smaller] world for almost sixty years and I’m not inclined to resume the particular disciplines required. I’ll occasionally tap on that windowpane and wait and listen for an answer that reaches into the macro world of measurable [and especially] verifiable results.

3 thoughts on “New Quantum Paradox Further Counters Sensible Assumptions About Reality

  1. Schrödinger's cat says:

    A team of researchers from Nanyang Technological University, Singapore (NTU Singapore) and Griffith University in Australia have constructed a prototype quantum device that can generate all possible futures in a simultaneous quantum superposition.
    “The functioning of this device is inspired by the Nobel Laureate Richard Feynman,” says Dr. Jayne Thompson, a member of the Singapore team. “When Feynman started studying quantum physics, he realized that when a particle travels from point A to point B, it does not necessarily follow a single path. Instead, it simultaneously transverses all possible paths connecting the points. Our work extends this phenomenon and harnesses it for modelling statistical futures.”
    Richard Feynman:

  2. Beyond weird says:

    “Bizarre New Quantum Research: Reality Itself May Be Subjective” “In a new paper in the journal Science Advances, an international team of quantum physicists argue that thanks to the unusual rules of quantum mechanics, facts themselves could depend on who’s looking at them. In other words, reality could be twisted by observation.”
    See “Experimental test of local observer independence” and “Quantum physics: our study suggests objective reality doesn’t exist” by Alessandro Fedrizzi and Massimiliano Proietti, quantum physicists at Heriot-Watt University in Edinburgh, Scotland.
    “The insight we gained is that quantum observers may indeed be entitled to their own facts,” wrote Fedrizzi in a September statement. That brings up the question: do the rules of quantum mechanics apply to much larger objects? Or are the rules different for single atoms or photons?
    …“Clearly these are all deeply philosophical questions about the fundamental nature of reality,” wrote Fedrizzi and Proietti in The Conversation. “Whatever the answer, an interesting future awaits.”

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