# Mic-drop closer Part of [The AI Tells Index](https://feedsquad.com/ai-tells). A tell signals low effort. It does not identify an author. Skilled writers produce every shape listed here, some of them daily, and automated detectors misread those writers for it at rates measured above 60 percent on non-native English prose. Nothing in this index proves that a machine wrote anything. Read an entry as one piece of evidence to weigh against the false-positive notes printed beside it. ## Facts - Id: mic-drop-closer - Category: Rhetorical and discourse (rhetorical) - Subcategory: closer - Also known as: epiphonema, standalone final line, closing one-liner - Status: Active. Currently signals low-effort writing. - Severity: medium - Evidence grade: community-observed (named by practitioners, no formal measurement exists) - Languages: en - Added: 2026-08-15 - Updated: 2026-08-15 - Page: https://feedsquad.com/ai-tells/mic-drop-closer ## Description A final line, set as its own paragraph, engineered to land. Rhetoric calls the pithy closing sentence epiphonema and the slot it occupies the peroratio, and both are legitimate and old. The catalogued version restates the piece in a shorter and grander sentence that introduces nothing. This entry is positional and applies only to the last line; the aphorism-mold entry fires on surface strings anywhere in a text, so the two never cover the same sentence. ## Why it reads as machine-written The closer is the easiest sentence in any piece to generate and the hardest to justify. It has no obligation to be true, only to sound final, and finality is a matter of rhythm rather than content. vale-ai-tells ships a 63-token list for the family, which is a fair measure of how standardised the vocabulary has become. ## Detection Type: judge (a rubric for a lightweight model judge) Rubric for a lightweight model judge: ```text Read only the final paragraph of the supplied text. Answer yes when all four hold. (1) The final paragraph is a single sentence standing alone. (2) It makes a general claim about people, work, time or the future rather than a claim about the subject of the piece. (3) It contains no proper noun, number, date, quoted term or named object that appears earlier in the body. (4) Deleting it removes no information from the piece. Answer no when the closer states what the writer will do next, names a person, product or date, answers a question the body left open, or is dialogue. Answer not applicable when the text has fewer than two paragraphs. Return the verdict, then quote the final sentence verbatim. ``` ## Examples Constructed specimens. Written for this index. Never quoted from anyone's posts. ### Specimen 1 Before, exhibiting the tell: > We rebuilt the publish queue in June and the retry logic in July. > > The future belongs to the teams who ship. After, repaired: > We rebuilt the publish queue in June and the retry logic in July. > > The retry change is the one that mattered. A failed post now goes out inside ten minutes instead of never. Note: Figures in this repair are invented for the specimen. ## False positives Who legitimately writes this way. Columnists, speechwriters and essayists end on a line for good reasons, and the peroratio has been a taught structural slot for two thousand years. Sports writing, obituaries and campaign copy all close on a summarising sentence by convention. The check is whether the closer names something specific from the body: a person, a number, a decision, a date. A closer that gathers up the actual argument is doing the job the figure was invented for. A closer that would fit unchanged at the end of a different article about a different subject is the version this entry describes. ## Model attribution Unattributed. The three sources describe assistant output in general and none separates model families or publishes a per-product rate. ## Platform notes - linkedin: The standalone final line is a formatting convention of the surface, where posts are read in a narrow column and the last line sits above the follow button. The convention predates chat products there. ## Sources 1. vale-ai-tells, 111 machine-checkable rules https://github.com/tbhb/vale-ai-tells (tier: community; accessed 2026-08-14) 2. slop-lint, social-reply-register molds https://github.com/eric-sabe/slop-lint (tier: community; accessed 2026-08-14) 3. tropes.fyi pattern directory https://tropes.fyi/directory (tier: community; accessed 2026-08-14) ## Status history Ids are permanent. A retired tell keeps its id and its page. - 2026-08-15, Active: Opened as active. Three practitioner sources carry the family, one of them as a rule with a 63-token vocabulary list. None publishes a rate, and the closing device itself is ancient, so the grade is community-observed and the rubric requires four conditions rather than one. ## License CC BY 4.0. https://creativecommons.org/licenses/by/4.0/ Attribution: The AI Tells Index, feedsquad.com/ai-tells Reuse the data, including commercially. Keep the attribution line. --- Dataset version 1.0.0. Schema version 1. Part of [FeedSquad](https://feedsquad.com). Built by [Herman Foundry](https://hermanfoundry.com) from Levi, Finnish Lapland.