High School Roger Penrose's need for a physics Grey area

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The discussion centers on the measurement problem in physics, particularly the uncertainties that arise between microscopic and macroscopic realms. Participants question whether there exists a transitional "grey area" that could indicate new physics. Mesoscopic physics is highlighted as an active field, though some argue there is no empirical evidence supporting the need for new physics at this scale. The conversation suggests skepticism about the existence of a definitive boundary or "closing door" in this context. Overall, the dialogue emphasizes the complexities and ongoing debates surrounding quantum theory and its applicability.
edmund cavendish
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Roger Penrose has postulated the need for a new physics in the "grey area" between macroscopic and microscopic. Is there such a need and if not why not and if there is what progress have we made toward it. If might end the pointless debate about macroscopic measuring devices?
Many discussions of the so called measurement problem seem to run up against the buffers of the uncertainty of what exisfs ? In the grey area between mjcro and macro scopic. Is there a zone a closing door of some new physics?
 
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Er.. mesoscopic physics is an active area of physics. Have you looked it up?

There is no "zone a closing door"... whatever that is.

Zz.
 
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AFAIK there's no empirical evidence for the introduction of new physics in some mesoscopic scale, i.e., there's no known range of applicability of QT seen yet.
 
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I am slowly going through the book 'What Is a Quantum Field Theory?' by Michel Talagrand. I came across the following quote: One does not" prove” the basic principles of Quantum Mechanics. The ultimate test for a model is the agreement of its predictions with experiments. Although it may seem trite, it does fit in with my modelling view of QM. The more I think about it, the more I believe it could be saying something quite profound. For example, precisely what is the justification of...

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