As far as I recall (and the last time i did any QM in anger was in 2005) what "really happens" is interpretation dependent and you can pick whichever you prefer! I gave up and just trusted the maths.
Last time for me was 2008, but indeed any description of the reality relies on some 'story telling'. Without an interpretation however you can only make a prediction of the result, and that result says nothing of the state pre measurement.
Last time for me was 2008, but indeed any description of the reality relies on some 'story telling'. Without an interpretation however you can only make a prediction of the result, and that result says nothing of the state pre measurement.