Surely, after 62 years, we should have an exact formulation of some serious part of quantum mechanics? By 'exact' I do not of course mean 'exactly true'. I mean only that the theory should be fully formulated in mathematical terms, with nothing left to the discretion of the theoretical physicist... until workable approximations are needed in applications. By 'serious' I mean that some substantial fragment of physics should be covered. Nonrelativistic 'particle' quantum mechanics, perhaps with the inclusion of the electromagnetic field and a cut-off interaction, is serious enough.
John Stewart BellRelated topics
course cut-off discretion enough field formulation fragment inclusion interaction left mean mechanics nothing particle perhaps physicist physics quantum should substantial theory yearsRelated quotes
[Computer science] is not really about computers -- and it's not about computers in the same sense that physics is not really about particle accelerators, and biology is not about microscopes and Petri dishes...and geometry isn't really about using surveying instruments. Now the reason that we think computer science is about computers is pretty much the same reason that the Egyptians thought geometry was about surveying instruments: when some field is just getting started and you don't really understand it very well, it's very easy to confuse the essence of what you're doing with the tools that you use.
Hal Abelson
You cannot successfully use your technical knowledge unless you are a fairly educated person, and, in particular, have some knowledge of the whole field of the social sciences as well as some knowledge of history and philosophy. Of course real competence in some particular field comes first. Unless you really know your economics or whatever your special field is, you will be simply a fraud. But if you know economics and nothing else, you will be a bane to mankind, good, perhaps, for writing articles for other economists to read, but for nothing else.
Friedrich Hayek
A final moral concerns terminology. Why did such serious people take so seriously axioms which now seem so arbitrary? I suspect that they were misled by the pernicious misuse of the word ‘measurement' in contemporary theory. This word very strongly suggests the ascertaining of some preexisting property of some thing, any instrument involved playing a purely passive role. Quantum experiments are just not like that, as we learned especially from Bohr. The results have to be regarded as the joint product of ‘system' and ‘apparatus,' the complete experimental set-up.
John Stewart Bell
Where do people get off saying the Beatles should give $200,000,000 to South America? You know, America has poured billions into places like that. It doesn't mean a damn thing. After they've eaten that meal, then what? It lasts for only a day. After the $200,000,000 is gone, then what? It goes round and round in circles. You can pour money in forever. After Peru, then Harlem, then Britain. There is no one concert. We would have to dedicate the rest of our lives to one world concert tour, and I'm not ready for it. Not in this lifetime, anyway.
John Lennon
I have left the obvious, essential fact till this point, namely, that it is the Russian Armies who have done the main work in tearing the guts out of the German army. In the air and on the oceans we could maintain our place, but there was no force in the world which could have been called into being, except after several more years, that would have been able to maul and break the German army unless it had been subjected to the terrible slaughter and manhandling that has fallen to it through the strength of the Russian Soviet Armies.
Winston Churchill
