Period-Dialogue Authenticity Checker
A writing assistant that tells authors if their characters' dialogue sounds correct for the time period.
A writing-assistant tool for novelists, screenwriters, and game narrative teams that flags dialogue whose politeness conventions and speech-act phrasings (requests, refusals, apologies) don't match the documented norms of the story's era, with citations to the historical evidence.
Concept
The writer sets a period and language (e.g., English 1815, French 1670). Pasted scenes are checked line by line against a curated evidence base of era-specific pragmatic norms — how requests were hedged, how superiors were addressed, whether a direct refusal was socially sayable — compiled from historical pragmatics research. Flags cite the underlying evidence and suggest period-plausible rewrites. The wedge is deliberately narrow: pragmatic norms (address, politeness, speech-act realization), not vocabulary or grammar, which word-level anachronism tools already cover. It is a checker, not a generator — the writer keeps their voice, and the tool catches manners of speaking that break period immersion.
Why now
Historical pragmatics [0] has accumulated precisely this kind of finding — politeness strategies, conversational principles, and speech acts in historical texts in their sociocultural context of communication, across any language and both literary and non-literary sources — so an evidence base for "how people actually phrased requests and refusals in period X" exists to build a checker on. Systematic study of how topics and interaction are opened, sustained, and closed in naturally occurring conversation [6] provides the structural baseline against which period deviations can be judged. Period drama and historical games draw recurring public criticism for anachronistically modern manners of speaking, and no current writing tool addresses the pragmatic layer — the gap sits between available word-level anachronism checkers and the sociocultural norms that historical pragmatics documents.
Written by GLM · 10 Oct 2026
AI assessment
A highly focused, evidence-backed tool that solves a specific pain point for high-end historical narrative production by targeting pragmatic norms rather than simple vocabulary.
- Evidence strength 4/5
- The idea leverages the established field of historical pragmatics and specifically cites the Journal of Historical Pragmatics as a source for the necessary evidence base.
- Market pull 3/5
- While the target users (AAA game studios, prestige authors) have a clear need for authenticity, the total addressable market is niche and may rely on human consultants.
- Novelty & moat 4/5
- It distinguishes itself from existing 'politeness checkers' by applying the concept diachronically to historical eras rather than modern regional cultures.
- Feasibility 3/5
- Building the tool is straightforward, but the 'curated evidence base' requires significant manual effort or a sophisticated RAG system over academic corpora.
- Wedge clarity 5/5
- The wedge is exceptionally sharp: it ignores grammar and vocabulary to focus exclusively on speech-act realization and politeness conventions.
- Simplicity / focus 5/5
- The product is a single-purpose checker with a clear input (text) and output (flags/citations), avoiding platform creep.
Scored by Gemma 4 · 10 Oct 2026. Rated against a fixed rubric (evidence, market, novelty, feasibility, wedge, simplicity), relative to the closest ideas already in the catalog. A prior estimate to compare ideas before real-world signal arrives.
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Who benefits
- Ubisoftcompany
Assassin's Creed titles span many historical periods and are routinely criticized for modern-sounding dialogue; a pragmatic-norms checker gives its narrative teams a per-era reference for address and politeness conventions.
- Philippa Gregoryindividual
She writes Tudor-set novels where dialogue credibility is central to her readership; the tool catches modern manners of requesting, refusing, and addressing superiors before publication.
- Creative Assemblycompany
Its Total War historical titles feature period characters and diplomacy dialogue; era-specific speech-act norms would strengthen the historical authenticity the brand trades on.
- Bernard Cornwellindividual
He writes prolifically across Napoleonic, Saxon, and other settings; a quick era check reduces reliance on feel alone for period speech conventions.
- Penguin Random Housecompany
It publishes broad historical-fiction lists; editors could run pragmatic-anachronism checks on manuscripts as a differentiating editorial service.
Research it builds on
- Topic as a Discourse Notion: a Study of Topic in the Conversations of Children and Adults( )Elinor Ochs Keenan, Bambi B. Schieffelin · 2026 · 287 citationsAll ideas from this paper →
- Journal of Historical PragmaticsJucker, Andreas H, Taavitsainen, I · 2026 · 128 citationsAll ideas from this paper →