Nobody &quot;proved&quot; anything.  Proof is for math and alcohol, as they say.<p>I wouldn&#x27;t have thought of it as begging the question, because it didn&#x27;t occur to me that the empirical question of what the results are was in dispute!  Yes, I suppose if you believe that this sort of Copenhagen-based complaining actually consistently leads people to do (1) rather than (2), rather than mostly resulting in (4), there would be little reason to have a problem with it.  As it is, I&#x27;m not prepared to argue that empirical question right now, so I&#x27;m just going to note that I disagree and and that there&#x27;s any number of examples of (4) out there.