Quantum cosmology
quantum cosmology was a topic studied by Vulcan children in the 23rd century, according to the script of .

In the script, one of the questions asked of eleven year old Spock at the skill dome was to identify the central assumption of quantum cosmology, to which he responded "everything that can happen does happen, in equal and parallel universes."

In the finished movie, this reference seems at least inaudible among the many voices in the center, or might have been cut entirely.

However, the dialog was included in Issue 2 of the Star Trek: The Official Motion Picture Adaptation.

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Unused production material