Wigner's friend and continuous time evolution of the state of a closed system and the probabilistic, discontinuous collapse of the state of a system upon measurement. Wigner's friend is therefore directly linked to the measurement problem in quantum mechanics with its famous Schrödinger's cat paradox. The thought experiment posits a friend of Wigner in a laboratory and lets him perform a quantum measurement on a physical system (this could be a spin system or also Schrödinger's cat). This system is assumed to be in a superposition of two distinct states, say, state 0 and state 1 (or "dead" and "alive", in the
Dead or Alive Ultimate Dead or Alive Ultimate Dead or Alive Ultimate is a compilation fighting game developed by Team Ninja and released by Tecmo for the Xbox in 2004. It is a collection of the two previous games in the series, 1996's "Dead or Alive" and 1999's "Dead or Alive 2". It marks the only game in the series to date to be a compilation. "DOA Ultimate" contains a high-resolution edition of the Sega Saturn version of "Dead or Alive", and an enhanced remake of "DOA2" which utilized the "Dead or Alive Xtreme Beach Volleyball" graphics engine and offered "Dead or Alive 3"