: Re: "The flux capacitor--it's what makes time travel possible." When to keep world-building explanations short Gosh, I really think I'm quite clever sometimes. But what about those situations where

@Cooney417

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Do you build on it?

Sometimes the device is something your story needs, but doesn't need to dwell on; sometimes the story revolves around it as a central conceit.

For example, let's take the power requirements of the flux capacitor in Back To The Future. The plot arc of the first film revolves around its staggering requirements -- the uranium leads to Doc getting shot in 1985, strands Marty in 1955 with only one shot at returning to his own timeline via a lightning strike. So much information, which is directly driving the plot.

In the sequel, it's completely resolved -- Mr. Fusion provides all the power the flux capacitor needs; briefly displayed occasionally but otherwise entirely irrelevant and no longer requiring the audience's attention.

We need to know about the power requirements to comprehend the plot and the issues are front and centre, brought up early, foreshadowed; but when it is no longer plot relevant we place a fig-leaf over it and no longer draw attention to it.

Explaining the limitations and requirements of your time-travel solution are critical, especially if you want to play with them later; 88 mph is established early on, and only really becomes relevant in episode 3.

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