If we're on the topic of Star Trek, observe how the crew of Enterprise-D talked with the ship's computer. LLMs are the quality jump in technology that, for the first time, make it possible to create this kind of DWIM interaction, where the computer can actually understand what you mean when you talk to it like to a person, in natural language, instead of a restricted language.

Ironically, later shows dialed down on the smartness of Starfleet computers - from what I heard, TNG level voice interface seemed too advanced to be believable. But it turns out, the unbelievable became reality sooner than anyone expected.