A physicst calls it quantum monism but he more or less means the multiverse. The problem, as he sees it, is that “the laws of physics appear to be finely tuned to permit the existence of intelligent beings who can discover those laws—a coincidence that demands explanation”. However, if we accept that there are zillions of universes out there, science loses its power to predict anything: “There is no obvious guiding principle for the CERN physicists searching for new particles. And there is no fundamental law to be discovered behind the accidental properties of the universe.” His proposal?
This is where “quantum monism,” as championed by Rutgers University philosopher Jonathan Schaffer, enters the stage. Schaffer has mused over the
questionwhat the universe is made of. According to quantum monism, the fundamental layer of reality is not made of particles or strings but the universe itself—understood not as the sum of things making it up but rather as a single, entangled quantum state…
Moreover, this conclusion extends to other multiverse concepts such as different laws of physics in the various valleys of the “string theory landscape” or other “baby universes” popping up in eternal cosmological inflation. Since entanglement is universal, it doesn’t stop at the boundary of our cosmic patch. Whatever multiverse you have, when you adopt quantum monism they are all part of an integrated whole: There always is a more fundamental layer of reality underlying the many universes within the multiverse, and that layer is unique. Heinrich Pas, “Quantum Monism Could Save the Soul of Physics” at Scientific American
It’s not clear how proposing a cosmic layer underlying the universes would help the problem Dr. Pas describes (ruling out fine-tuning) if the layer is not part of the universe we now study. It may, of course, be easily incorporated into a number of world religions. One suspects it already has been.
Note: He references Sabine Hossenfelder’s work. Maybe she will reply.
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See also: What would a multiverse really be like?
Sabine Hossenfelder: The multiverse is “a fringe idea”
The multiverse is science’s assisted suicide