Chapter 5. World Types I: Time

Having confirmed the conditions of the profession, it is now time to master the materials. The five chapters of Part Two treat the types of worlds. To know the types is to expand the designer's vocabulary. A type with accumulated precedent is, for the reader, already a bundle of approved premises, so using a type accurately lowers the cost of permission. The guiding question of this chapter is: how does tense define a world? The time axis is the first axis of type classification, and the moment a world's when is fixed, the object of historical accuracy and the conditions of permission are fixed together.

1. Tense: The First Axis of Classification

Dividing types requires an axis, and the first axis is tense. Whether a world is present, past, future, or neither is not a simple choice of setting. The choice of tense decides three things at once. The first is the verifier. Set the stage in the present, and every reader becomes a verifier: get today's Seoul subway fare wrong, and you'll be caught immediately. Set the stage in the past, and record and historiography become the verifier. Set the stage in the future, and the verifier disappears, but the burden of proving plausibility shifts to the writer. No one has lived the future, so no one can say you're wrong, but the world itself must prove that it makes sense. The second is the cost of explanation. The present needs almost no explanation; the past needs an introduction to its historical conditions; the future requires teaching the world's entire operating principles from scratch. Even across the same hundred pages, how much page space is left for the story changes with tense. The third is the degree of freedom. The denser the verifiers, the less freedom there is; the fewer the verifiers, the more freedom grows, and with it responsibility. In short, tense is the first dial that sets the exchange rate among verification, cost, and freedom. Together with the space axis to come, this axis applies to every world. Each entry in the typology can be understood as a place where these dials have been fixed at a particular position long enough for precedent to accumulate. A place with accumulated precedent is also a place where the reader's approval process has been simplified. Simply naming the type contracts away half the premise.

2. Present: A World That Uses Reality As Is

The dial's default setting is the present. A world set in the present borrows reality whole: physical law, nations and currency, even yesterday's news are all recycled as setting. This type's strength is overwhelming economy. No page space is needed to explain the world, so the story can begin immediately, and the reader's entire lived sense of daily life is mobilized as material for verisimilitude. The weakness comes from the same place. Because it is a world everyone knows, everyone is a verifier. This is an era in which a fact-check post from someone who actually works in the depicted profession goes up the same night an episode airs. A single line describing a job, a single line describing a neighborhood, and the professionals and residents in question attach themselves as expert judges. That present-day fiction looks like it involves no worldview work is an illusion; the work is simply renamed historical accuracy and research. A production team's research folder for a contemporary drama can run as thick as a fantasy setting bible. The investigative procedures of a police drama, the hospital system of a medical drama, the litigation procedures of a courtroom drama are all world data that must be researched and organized. The practice of attaching a professional consultant can be seen as this type's worldview supervision, outsourced. There are two design implications. First, the worldview document for present-day fiction takes the form not of a creative setting bible but of a research dossier, and managing sources becomes the core of quality. Second, any point where the work deliberately departs from reality must be marked in the document as an intentional deviation. An unmarked deviation is indistinguishable from a research failure, and once a series runs long, even the production team forgets which one it was. Much of the historical-accuracy controversy around a season two starts from an undocumented deviation in season one.

3. The Unrealistic Present: A World One Layer Beneath Reality

There is a standard solution for bringing in the unreal while keeping the present's economy: plant one hidden layer beneath the surface of reality. The city stays as it is, but behind it a society of wizards, an agency that manages monsters, or the back alleys of gods exist in parallel. The wizarding world of Harry Potter is the representative case. The core law of this type is concealment. The world must have an answer to the question of why the hidden layer never surfaces. Whether the answer is memory-wiping, cognitive blocking, or an authority's cover-up operation, the kind of answer is free, but the absence of an answer is fatal. Why does no one know when something this big is happening? is the question readers ask first. In the age of smartphones and CCTV, the design difficulty of concealment keeps rising. Concealment that once needed only a witness's silence must now also account for the deletion of data. The second law is the rule of the contact point: where and under what conditions the surface and the hidden layer meet is this type's real map. The protagonist is usually the figure who passes through the contact point, and the reader enters the hidden layer together with the protagonist. The design implication is to settle the concealment mechanism and the contact-point rules before building the hidden world whole. These two are the load-bearing pillars of this type; the rest of the hidden layer's flesh can be added even during serialization. A world with weak pillars and fattened-up flesh collapses at its first verification. Proposals that build a hundred pages of the hidden kingdom yet have no answer for why it isn't discovered are, in practice, common.

4. Magical Realism

There is also a grammar that mixes the unreal into reality without positioning even a hidden layer: magical realism. As in García Márquez's novels, the dead sit at the dinner table and people float into the sky, narrated in ordinary sentences with no explanation at all. The difference from the previous type is the presence or absence of a boundary. The unrealistic present erects a wall of concealment between reality and unreality, but magical realism removes the wall itself. The supernatural is not hidden; it is simply there, and none of the characters are surprised by it. The absence of surprise is what teaches the reader this world's grammar. This type's condition of permission is distinctive. The premise the reader approves is not this world has miracles but this world does not treat miracles as special. That is why systematizing the rules becomes poison instead. The moment a miracle is given a principle and a limit, it becomes a magic system, and the world slides into fantasy. Conversely, if the composure breaks and the characters start investigating the miracle, the world slides into mystery. This type sits on a narrow ridge between two slopes. The narrator's composure is this genre's law itself. The design implication is clear. What the designer manages in this type is not the rules of the supernatural but the consistency of affect. A list of what kind of miracle belongs to this world's tone, and what characters are and are not surprised by, stands in for the setting bible. This is a rare type where what gets built is a sheet of attitude, not a sheet of numbers and principles. The question of supervision, too, becomes not is this setting possible? but would this world go through this so calmly?

5. Exorcism: The Grammar of the Modern Occult

Among the supernatural set in the modern day, the place with the best-organized rules is exorcism. A demon possesses someone, and a priest drives it out through ritual. This type is sturdy because it needs no worldview built from scratch. Catholicism, a real institution, already has the procedures, offices, and tools of the rite of exorcism in place, and the genre borrows that entire system whole. It is a structure in which the authority of a real religion lends verisimilitude to a fictional law. The audience approves the rules of Latin prayers, holy water, and the cross without any separate explanation, because they have heard somewhere that it is real. Borrowed authority is not free, though: stray too far from a real order's actual procedures, and it becomes a demerit instead. The core of this type's law is procedurality. Evil is powerful, but it responds to procedure. The ritual has stages; skipping a stage carries a cost; the priest's qualifications and equipment determine the outcome. Because there is a procedure, tension becomes designable. The design implication concerns the ethics and the technique of borrowing. Since a real religion is being borrowed, where to draw the line on doctrinal distortion becomes a planning judgment, and acceptance varies by regional market. Technically, the center of the work is building a table of procedure: stage, condition, outcome on failure. This table is this world's physical law. The more precise the table, the less the temptation to cheat, and the greater the satisfaction of a victory won by following procedure. Swap in a different mythic system and the table's structure still gets reused. Whether the base mythology is musok (Korean shamanism) or yin-yang and the five elements, change it and the frame of stage, condition, and cost still carries over unchanged.

6. Magical Girl: The Everyday and the Superpowered Running in Parallel

The standard Japanese-origin form that combines the grammar of concealment with the coming-of-age story is magical girl fiction. An ordinary student transforms and fights, then returns to everyday life when it's over. This type's world structure is a double life. A daytime world and a nighttime world run in parallel inside one character, and the two worlds must not know each other. So the real law of magical girl fiction is not the rule of combat but the rule of concealment. The constraint that a transformation must not be discovered builds half the narrative. The misunderstandings that arise from hiding one's identity, the exhaustion of a double life, the preciousness of the exception that is a comrade who shares the secret, are all derivatives of this one constraint. It is a good example of a single constraint continuously generating narrative resources. The second axis is the price. Power comes with a contract, and a contract comes with a fee. A world where the fee is stated leans bright; a world where the fee is hidden leans dark. The level of disclosure is itself the design variable for tone. Simply adjusting when the fee clause is revealed splits the same skeleton into a cheerful work and a brutal one. The editorial decision of when to show the details of the contract is what sets the genre's temperature. The design implication is managing the balance between the two parallel worlds. If the everyday part is thin, there is nothing at stake and the tension of concealment dies; if the superpowered part is thin, there is no reward for transforming. The density of both worlds must be designed together, and in this type especially, the detail on the everyday side is not decoration but a load-bearing structural member. The more concrete the everyday life that can be lost, the more weight the fight carries. Types where the details of a school festival and a regular snack shop matter as much as the setting of the final battle are not common.

7. History: A World Where Historical Accuracy Is the Law

Turn the dial to the past, and the verifier changes. The worldview of historical fiction is a world that already existed, and that world's law is historical accuracy. Historical sources are the constitution, scholarly consensus is precedent, and readers who know the period are the jury. It is stricter than the review of an invented world in that there is no procedure for appealing the verdict. The worldview work of historical fiction is therefore closer to restoration than to creation. Collecting and systematizing that era's life data — food, clothing, and shelter, prices, the systems of rank and office, even the currents and taboos of language — is the body of the work. What belongs to creation is the characters and events placed on top of it, not the era itself. What's interesting is that this type naturally shows the ideal form of a worldview document. On historical-fiction productions, a deliverable called the historical-verification dossier exists as standard practice. Sources are attached, items are classified, and a reviewer is assigned. The specification that a fictional world's setting bible ought to aspire to already exists on historical-fiction sets. This is where it is worth a designer's while to study historical-fiction production practice: a specification transplants faster than it can be invented. There are two design implications. First, since the resolution of historical accuracy cannot be brought to a uniform level across the whole territory, a sense of priority is needed to concentrate the budget at the story's key junctures. This is the same principle of detail discussed earlier, operating unchanged in the past tense. Second, the policy for handling points where historical accuracy collides with entertainment must be decided in advance. A set with no policy repeats the same argument scene after scene. Once the line between the priority of accuracy and the allowance for drama is agreed on paper, argument turns into a ruling.

8. Faction: A Contract Between History and Fiction

The type that plants fictional characters and events into a world of historical accuracy is faction — a blend of fact and fiction (not to be confused with a political faction) that fills the gaps in the record with invention atop the skeleton of real history. A fictional minister is placed in the reign of a real king; an unrecorded conspiracy is laid behind a real event. It is a structure in which history is the stage and fiction is the actor. The contract this type makes with the reader is intricate. The premise that gets approved is anything could have happened in the gaps of the record, and the condition of the contract, in exchange, is do not trespass beyond the gap. The fictional minister may do anything at all, but the outcome of a war on record and the year of the king's death cannot be changed. It is an acrobatic feat with a fixed start and a fixed landing: the story departs from a gap, goes through whatever twists it likes, and must land exactly on the recorded result. Freedom exists only inside that stretch, and the restriction is precisely what creates the plot's tension. A faction that lands well delivers a distinctive pleasure — the pleasure of so that's how the record came to say that, the moment fiction becomes a footnote to real history. This pleasure is faction's signature product, the return that justifies the cost of historical accuracy. The design implication is making a map of the gaps. The most important chapter in a faction's design document is the list of stretches where the record falls silent along the period's timeline. Chart where the gaps are and what fixed points sit at either end of each gap, and the space the story can occupy and the walls it must respect become visible at a glance. A gap map is not a tool of censorship but a guide to a safe zone for creation. A writer who knows where the wall is can run right up to it.

9. Alternate History: Designing the Point of Divergence

Flip one condition of the contract, and a different type opens up. Alternate history changes the record itself. What if the other side had won that war? What if that invention had come a hundred years earlier? This type's design is the design of a point of divergence. Fix a single point where the story splits off from actual history, and run everything after it forward as consequence. The rule is clear: the change is the single point of divergence alone, and everything else must be its logical consequence. The point of divergence is the premise granted permission; everything after is a development under review. What the reader approves is one what-if, not the writer's unlimited license to alter events. If the world after the point of divergence runs arbitrarily to convenience, it is judged a breach of contract. So half of an alternate history's craft is decided at the choice of the point of divergence. A good point of divergence is a place where a small change produces a large chain reaction — a hinge on which the weight of history rested. This is why the outcome of a war, the life or death of a figure, and the arrival time of a technology are the usual candidates. A bad point of divergence is one where changing it produces little consequence, or one that keeps demanding further alterations to reach the desired result. Every additional alteration chips away a little more at the one what-if contract. The design implication is writing a simulation document. Run a timeline of alterations from the point of divergence to the present, sorted into columns for politics, economy, technology, and culture, and every detail of this world gains a matrix to reference. An alternate history with a weak timeline becomes contemporary fiction with a different cover, and readers spot that complacency precisely. It should also be factored in that alternate history's readership tends to be a group with substantial historical knowledge, so the intensity of verification runs higher than the genre average.

10. Timeslip: The Device for Crossing Time

The last place on the time axis is not a world that lives inside a single tense but a world that crosses between tenses. Timeslip is the device by which a character moves to a different point in time, and regression fiction and time-travel fiction belong to this family. It has long been a mainstay genre of the web-novel market, so precedent for rule design is richest here. In this type, the world's law is simply the rule of transit: who crosses, carrying what, under what conditions, and what effect the traveler's actions at the destination have on the original time. The last item especially — whether the past can be changed — decides the world's fundamental structure. There are broadly three options. A world where change is impossible produces the drama of fatalism; a world where change overwrites the present produces the drama of undoing; a world where change spawns a new world line opens onto a parallel universe. Whichever of the three is chosen, it must be disclosed early and held to the end. A mid-course change to the rules of time is this genre's most common and most fatal breach of contract. A time story whose rules have changed loses its grounds for tension and becomes weightless — a state in which any crisis can be solved by the next regression. The design implication is drafting the rule sheet in advance. Fix the conditions of transit, the number of repeats allowed, whether memory and possessions carry over, and the way a change ripples outward, all on a single sheet, and have every episode reference it. The longer the serialization and the more times the regression repeats, the more this sheet functions as the world's constitution. And as the third option shows, the rules of time inevitably summon a problem of space. Where do the diverged world lines exist? That is next chapter's question.