I was under the impression that those theories agree about their predictions. Their relative merits come down to how well they explain things and how well thos

I was under the impression that those theories agree about their predictions. Their relative merits come down to how well they explain things and how well those explanations jive with existing science. So either: - I'm wrong, and some phenomenon exists that can differentiate the theories. - The only thing about quantum computing that will change if the Copenhagen interpretation falls out of favor is the contents of the textbooks