Multiple realities
(covers information from several alternate timelines)

A simulation was a recreation of something that could be used for many reasons, such as training or entertainment.

One form of simulation was the holoprogram, which recreated people, places, and things using holograms and a holodeck. (TNG: "Encounter at Farpoint")

Prior to holodecks, Starfleet Academy had a life-sized recreation of a starship's bridge to train cadets for command situations. One popular simulation was the Kobayashi Maru scenario. (Star Trek II: The Wrath of Khan, Star Trek)

Types of simulations Edit