Neil,
Very nice essay, and our theses have much resonance. In fact I've explored some of your propositions further. In particular;
"tangible angular momentum is clearly not incidental to what we can know about
quantum objects." Absolutely central I agree, and I propose both than 'non-available' information has fooled us and that AngularM is massively powerful.
"we should at least re-examine the presumption that statistical coincidences
that simulate runs of circular photons, will produce all the same results as real such runs" Yes! Spot on. I hope you'll comment on my dissection of the error there.
"We still won't really understand wavefunction collapse, despite various controversial attempts to explain it."
Very true, but I hope you may also then give your views on some insight I think AngularM may offer in that area. I also propose a very practical, in theory, experimental test involving single photon emissions which will falsify a proposed resolution of the EPR paradox.
One question; You say above to Paul that; "interaction-free measurements' are now appreciated and used." I found not so, as so called weak measurement techniques all still involve interactions, then reverting to 'statistics' which I falsify as a valid method of extracting the information required.
Anyway, good writing and very pertinent view, well presented. Worth a much better score. I look forward to your thoughts on mine.
Best of luck
Peter