So, said Bohr, we had better just stop there. As he put it: There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we can say about nature. The is the central tenet of the so-called Copenhagen Interpretation of quantum mechanics, developed by Bohr and his colleagues in the Danish capital during the mid-1920s.*4 It’s an interpretation that doesn’t so much tell us ‘what is happening’, but rather, proscribes what we can legitimately ask about it.
