During March and April 1959 at Wheeler s request Everett visited Copenhagen on vacation with his wife and baby daughter in order to meet with Niels Bohr the father of the Copenhagen interpretation of quantum mechanics The visit was a complete disaster Everett was simply unable to communicate the core idea that the wavefunction should be regarded as a real classical field this was simply heresy to Bohr and the others at Copenhagen The conceptual gulf between their positions was simply too wide to allow any meeting of minds L on Rosenfeld one of Bohr s followers talking about Everett s visit described Everett as being undescribably stupid and could not understand the simplest things in quantum mechanics Everett later described this experience as hell doomed from the beginning 5 bold italic mine It is highly unlikely that Everett is stupid Obviously Rosenefeld is the one who could not understand even the simplest thing about QM from Everett s point of view I include this quote just to illustrate how dogmatic scientists can be sometimes