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; Léon 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]." 

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 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.