Quantum superposition the eigenvector corresponding to the measured eigenvalue. It is natural to ask why ordinary everyday objects and events do not seem to display quantum mechanical features such as superposition. Indeed, this is sometimes regarded as "mysterious", for instance by Richard Feynman. In 1935, Erwin Schrödinger devised a well-known thought experiment, now known as Schrödinger's cat, which highlighted this dissonance between quantum mechanics and classical physics. One modern view is that this mystery is explained by quantum decoherence. A macroscopic system (such as a cat) may evolve over time into a superposition of classically distinct quantum states (such as "alive" and
Dead or Alive Ultimate Sega Saturn version, and is generally considered more of a collector's disc than for its content. "Dead or Alive Ultimate 2", being a remake created after the debut of "Dead or Alive 3", takes elements and mechanics from both its original iteration and successor. The action of 3D-axis movement is as free-formatted as "DOA3", and Hitomi is now a playable character albeit outside story mode. Other elements have been kept intact from "DOA2". These include higher damaging counters than in "DOA3", environmental hazards not warranting a knockout on a character, and a counter mechanism that is much harder to execute.