An accelerating aircraft, in whatever direction, will move long distances. A flight simulator cannot move long distances. Therefore it cannot simulate acceleration correctly. Only slight deviations and turbulence can be simulated correctly. So what use can a flight simulator be, in training jet pilots? It's sophisticated manouvres that need to be experienced by jet pilots, and a flight simulator just can't do them. The computer part with the display is certainly useful, but the mechanical part seems such an aweful waste of money.