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 game mechanics, new game content, online multiplayer capabilities, and the inclusion of Hitomi as a playable character. "Dead or Alive Ultimate" is a compilation game that includes a remade version of "Dead or Alive 2", with re-developed graphics and new stages for the Xbox gaming system. It also includes the original Sega Saturn version of the first "Dead or Alive", with smoothed graphics, but lacks the additional content received in the later-released North American PlayStation version (no Bass or Ayane characters or extra costumes). Both editions include online play. "Dead or Alive Ultimate 1" is essentially identical to its original