The Dimension Theory stated that for every decision made, the alternative was played out in another dimension. (RD: Dimension Jump) This could be seen as a fifth dimension or co-existing reality, where objects shared the same space but were unaware of each other's presence. Arnold Rimmer suggested that it sounded like his parents in bed. (RD: Parallel Universe) Dimensions were synonymous with parallel universes or alternative realities, although it is unknown whether the seven main universes at the Omnizone counted as such.

Several methods have been seen for crossing dimensions.

Dimensions and realities discovered and seen

to be completed

See also