In quantum mechanics, the consistent histories or simply "consistent quantum theory" interpretation generalizes the complementarity aspect of the conventional Copenhagen interpretation. The approach is sometimes called decoherent histories and in other work decoherent histories are more specialized.

The Griffiths formulation of Consistent Histories broke with the orthodox in- terpretation by treating closed systems, by not assigning measurement a foun- dational role, and by insisting that quantum mechanics supply an account of all basic processes including measurements1.

The blurred unchanging appearance of a physical system in motion does not imply the immateriality of the particles making it up. Thus the Copenhagen Interpretation is wrong because its based upon Bohr and his associates jumping to unjustified conclusions.

It says that a quantum particle doesn't exist in one state or another, but in all of its possible states at once. It's only when we observe its state that a quantum particle is essentially forced to choose one probability, and that's the state that we observe.