The relative-state interpretation makes two assumptions.

The first is that the wavefunction is not simply a description of the object’s state, but that it actually is entirely equivalent to the object, a claim it has in common with some other interpretations.

The second is that observation or measurement has no special role, unlike in the Copenhagen interpretation which considers the wavefunction collapse as a special kind of event which occurs as a result of observation.

— Wikipedia on Many-worlds interpretation

2013.01.12 Saturday ACHK