The Coming of the Quantum Cats can - given different social conditions - develop completely different character traits (timid or assertive, benevolent or predatory, etc.) The title refers to the famous thought-experiment known as "Schrödinger's Cat", where the outcome of a real-world event depends on a quantum event. By some interpretations, the real-world object, in this case a cat, must be in two states simultaneously until it is observed. However, the story is more closely related to the many-worlds interpretation of quantum mechanics where all possible outcomes of an event occur, each in its own parallel universe. The same concept was treated, somewhat more pessimistically, in
Kasumi (Dead or Alive) sneak behind them and attack from the rear, or just confuse them mightily." IGN described her "a great character for any level of player" of "Dead or Alive 2" as "novices will certainly enjoy her easy mechanics, while master players will find some of the most evil combinations in the game with Kasumi." According to Andrew Alfonso's GameSpy guide to "Dead or Alive Ultimate", Kasumi's key moves include high kicks and a cartwheel attack, which is perfect against low attackers. Kasumi's preferred and recommended tag team partner is Ryu Hayabusa. GameSpy's Chau wrote that in "DOA3", "Kasumi's got some very