What is new in Everett’s model is that correlated to every one of these system wave functions is a different M-device waveform which records one of these attribute values. Thus if the measured attribute has five possible values, the quantum-entity-plus-measuring-device develops into five quantum systems, each with a different attribute value paired with five measuring devices each registering that value. Instead of collapsing from five possibilities to one actual outcome, the quantum system in Everett’s interpretation realizes all five outcomes.
