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 2 create a physics engine dedicated entirely to the animation of the female characters' breasts. "Dead or Alive 2" used the song "Exciter" by Bomb Factory in its opening sequence. Also used as a background track was "Deadly Silence Beach" and "Clumsy Bird". Both tracks can be found on the self-titled mini-album "Bomb Factory" and on the "Dead or Alive 2 Soundtrack". Two soundtrack CDs were released in 2000 by Wake Up in Japan: "Dead or Alive 2 Original Sound Trax" (KWCD-1001) and "Dead or Alive 2 Original Sound Trax" (KWCD-1004). Several Japanese guide books for the game were published by