/genre-craft

The Sci-Fi Pipeline: Worldbuilding → Plot

In science fiction, the speculative element (the technology, the alien biology, the altered physics, the future history) must be load-bearing: remove it, and the plot collapses. A story that would work unchanged as a contemporary drama with the serial numbers filed off is not science fiction — it is a drama wearing a costume.

The load-bearing test

For the central speculative element, ask: if I replaced this with its mundane equivalent, would the plot still function?

• A faster-than-light drive that only changes the scenery fails the test. A faster-than-light drive whose travel time creates the story's central dilemma (messages outlive senders; colonies diverge) passes it.
• Apply the test at the premise level (story-init) and again at the audit level (revision): list three plot turns that are impossible without the speculative element. Fewer than three means the element is decorative — either wire it into the plot or cut it.

Rules stated before exploited

The speculative element's rules are plot machinery, so they follow the same discipline as horror's monster rules:

• State the rules before the climax exploits them. The reader must be able to anticipate the solution's shape, even if not its specifics. A rule revealed at the moment of use is a deus ex machina with better production values.
• Costs and limits are more interesting than capabilities. A technology that does everything generates no plot; a technology with a price, a range limit, or a side effect generates all of it. Record costs and limits in the system file, not just powers.
• Rule changes are continuity changes. If the draft discovers a better rule mid-book, update the worldbuilding system file and re-check every earlier scene that assumed the old rule (story continuity territory).

The pipeline

Wire the speculative element through the existing machinery in this order:

1. System file (worldbuilding/systems/): rules, costs, limits, failure modes, who understands it.
2. Character file: who depends on it, who fears it, whose lie it feeds (see theme-craft) — the element should intersect at least one character's arc.
3. Arc file: at least one plot turn that is impossible without it (the load-bearing test, made concrete).
4. Timeline: the element's introduction precedes its exploitation — check planted-in vs paid-off-in ordering as with any setup.

Common failure modes

• The lecture chapter: a character explains the science to someone who should already know it. Deliver rules through use, failure, or conflict (see scene-craft/references/exposition.md), not seminars.
• The magic button: a capability introduced exactly when needed. Audit: every capability used in the climax must appear (even in passing) in the first half.
• The unexamined implication: a world-changing technology with no social consequences (immortality nobody comments on, teleportation with traffic jams). If the element is load-bearing for plot, its second-order effects should appear in the worldbuilding — or the world feels thin.

Sci-fi audit (revision)

• The load-bearing test: three plot turns impossible without the element.
• Rules stated before exploited; costs and limits recorded.
• No capability first appears in the climax.
• The element intersects at least one character's arc.
• Second-order effects visible in the worldbuilding.