# Asserted obviousness 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: asserted-obviousness - Category: Rhetorical and discourse (rhetorical) - Subcategory: assertion - Also known as: The truth is simple, needless to say, it goes without saying, cannot be overstated - Status: Active. Currently signals low-effort writing. - Severity: low - Evidence grade: corroborated (named independently by multiple credible secondary sources) - Languages: en - Added: 2026-08-15 - Updated: 2026-08-17 - Page: https://feedsquad.com/ai-tells/asserted-obviousness ## Description The claim is declared self-evident in place of being argued. tropes.fyi names the shape after one of its members, vale-ai-tells ships an absolute-assertions rule that catches the same family, and slop-lint carries the reply-register forms. The rule below fires on four fixed phrases and nothing else, because the general move is far older and far more common than any of this. ## Why it reads as machine-written Asserting obviousness is the cheapest substitute for evidence available in English, and it never fails a fluency check. A writer with no source can still make a claim sound settled. A writer who has a source usually prefers to give it, since a source persuades better than an assurance does. ## Detection Type: deterministic (a regular expression, run as written) Scope: sentence ECMAScript regular expression. The build validator compiles it and tests it against this entry's own specimens. ```regex \b(?:needless\s+to\s+say|it\s+goes\s+without\s+saying|the\s+truth\s+is\s+simple|can(?:not|['’]t)\s+be\s+overstated)\b ``` Flags: gi ## Examples Constructed specimens. Written for this index. Never quoted from anyone's posts. ### Specimen 1 Before, exhibiting the tell: > The truth is simple: consistency beats talent every time. Nobody disputes it, almost nobody acts on it, and the gap between those two facts is where the interesting part sits. After, repaired: > We published weekly for a year and monthly the year before. The weekly year brought four times the inbound, and the two best posts in it were both written in a hurry. Note: Figures in this repair are invented for the specimen. ### Specimen 2 Before, exhibiting the tell: > Needless to say, the value of a good onboarding call cannot be overstated. After, repaired: > Accounts that take the day-three call renew at about twice the rate of accounts that skip it. That is the only onboarding number we track. Note: Figures in this repair are invented for the specimen. ## False positives Who legitimately writes this way. Polemicists have used the move since long before print, and it is standard in opinion writing addressed to an audience assumed to agree already. Editorials, sermons, campaign literature and after-dinner speeches all lean on it, and so does technical writing when a step really is common ground for its readers. British administrative English keeps several of these phrases as neutral connectives. A reviewer checks what follows the assertion: if the next sentence supplies a source, a number or an example, the phrase was throat-clearing rather than a substitute for argument. ## Model attribution Unattributed. All three sources are practitioner lists describing assistant output in general, and none separates one product from another. ## Sources 1. tropes.fyi pattern directory https://tropes.fyi/directory (tier: community; accessed 2026-08-14) 2. vale-ai-tells, 111 machine-checkable rules https://github.com/tbhb/vale-ai-tells (tier: community; accessed 2026-08-14) 3. slop-lint, social-reply-register molds https://github.com/eric-sabe/slop-lint (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 with low severity. Three practitioner lists carry the family, and none publishes a rate. The move itself is ancient, so the rule is restricted to four fixed phrases and the entry says why. ## 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.