While the technological applications of quantum mechanics are bright, its meaning remains opaque. Thankfully, as Robert P Crease explains, philosophers of science are working on it.
The late theoretical physicist Steven Weinberg once wrote an essay entitled “The trouble with quantum mechanics”. Published in the New York Review of Books in 2017, it lamented the fact that “physicists who are most comfortable with quantum mechanics do not agree with one another about what it all means”. Weinberg’s statement seems paradoxical. If physicists are so untroubled by quantum mechanics, why squabble over its significance?
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