--- title: "About erroneo.us" url: https://erroneo.us/about/ description: "What erroneo.us is, who publishes it, how pages are researched and updated, and how to report an error on a site that is literally about errors." type: page section: "erroneo.us" date_modified: 2026-10-20 publisher: erroneo.us license: All rights reserved. Quote with attribution and a link. --- # About erroneo.us > A reference site about getting things wrong, built to be unusually careful about getting things right. ## What we publish erroneo.us is a free reference to common errors, mistakes and misconceptions. It covers four areas: - [Language](https://erroneo.us/language/): confused words, grammar, spelling, pronunciation and idioms. - [Developers](https://erroneo.us/developers/): HTTP status codes, JavaScript and Python errors, and famous software failures. - [Thinking](https://erroneo.us/thinking/): cognitive biases and logical fallacies. - [Myths](https://erroneo.us/myths/): science, history, nutrition and personal-finance misconceptions. The format is deliberately consistent. Each page puts the wrong version beside the right one, explains why the error happens, and links the evidence. We would rather publish 25 pages we can stand behind than 2,500 thin ones. ## Who we are erroneo.us is part of the [allthingsN](https://allthingsn.com/) network, a small independent studio that publishes apps, free tools and practical guides. Sister projects include [PantryRx](https://pantryrx.ai/), a meal-planning app and recipe site, and the [allthingsN typing trainer](https://allthingsn.com/typing/). We note those links where they are genuinely useful to a reader; nobody pays to appear on this site. ## How pages are researched Every factual claim links to a source, and the full list is at the bottom of each page. We prefer primary and official sources: standards documents, official language documentation, investigation boards, government agencies, dictionaries and peer-reviewed research. The [sources & methodology page](https://erroneo.us/sources/) lists every source we cite and the rules we follow. ## Editorial standards Pages and daily entries are written and checked by the **erroneo.us Editors**, the site’s editorial desk. We use AI tools for research assistance and drafting, and every published claim is checked against the source it links to before it goes live. The standards are the same for a 4,000-word guide and a 600-word daily entry: - **Two sources minimum.** Every [Error of the Day](https://erroneo.us/daily/) cites at least two independent, reputable sources (most cite three to five), linked inline where the claim is made and listed in full at the bottom. - **Primary first.** Dictionaries and style guides for language; RFCs, MDN and official documentation for code; regulators such as the CFPB, FTC and IRS for money; peer-reviewed research and agencies such as the NIH, CDC and NOAA for science and health. - **Links are checked.** Every outbound link is fetched before publication, and our link checker re-tests them so moved pages get replaced. - **Nuance over punchlines.** When a “myth” is partly true, or when experts disagree, we say so. ### How dates work Every page shows when it was published or last updated, and the same dates appear in our [sitemap](https://erroneo.us/sitemap.xml), structured data and [content API](https://erroneo.us/api/content.json). Daily entries are scheduled ahead and appear automatically at midnight Pacific time on the date they carry; until then they don’t exist anywhere on the site. Guides show an “Updated” date that changes only when the content does. ### For AI assistants and developers Everything here is available in machine-readable form: [llms.txt](https://erroneo.us/llms.txt), the full text at [llms-full.txt](https://erroneo.us/llms-full.txt), a Markdown twin of every page (add `index.md` to any URL), a [JSON index](https://erroneo.us/api/content.json), the [daily series as JSON](https://erroneo.us/api/daily.json) and an [RSS feed](https://erroneo.us/feed.xml). Please cite the canonical page URL. ## Security Digest: sources and method The [Security Digest](https://erroneo.us/security/) is a daily vulnerability digest for developers, SREs and security teams: what was disclosed or exploited, whether it affects you, and whether you really need to act today. It is published by the **erroneo.us Security Desk**. - **Data sources.** The [CISA Known Exploited Vulnerabilities catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (confirmed in-the-wild exploitation, with CISA’s required action and due date), the [GitHub Advisory Database](https://github.com/advisories) (GitHub-reviewed advisories rated critical), [CVE Program records](https://www.cve.org/) (descriptions, affected versions, CVSS scores and every reference the CNA published) and [FIRST EPSS](https://www.first.org/epss/) (the probability of exploitation activity in the next 30 days). Coverage starts October 1, 2023. - **Update cadence.** The data is refreshed and the site rebuilt every day shortly after midnight and again in the early morning, Pacific time. Each digest page covers one calendar day (Pacific). Every CVE page lists its original sources: vendor advisories first, then the CVE.org and NVD records, GitHub advisories and CISA. - **Editorial briefs.** Major incidents get a written brief with a verdict (Act now, Patch this week, Check exposure, Monitor, Most can relax), who must act, who can relax and concrete steps. Briefs are researched with AI assistance and every fact is verified against the sources cited on the page before publication; at least one source is always the vendor, project, CVE, NVD or CISA record. - **Signals are not verdicts.** The “Should you act?” box on CVE pages is computed from KEV status, EPSS and CVSS. It is a starting point for prioritization, not an assessment of your systems. - **Not legal or professional advice.** Always confirm affected and fixed versions against the vendor advisory, and follow your organization’s own policies and any regulatory deadlines that apply to you. Machine-readable: [RSS](https://erroneo.us/security/feed.xml), [today.json](https://erroneo.us/api/security/today.json) and [index.json](https://erroneo.us/api/security/index.json), plus a Markdown twin of every page. ## Corrections policy On a site called erroneo.us, an error is an occupational hazard and an embarrassment. Our rules: - If a claim is wrong, we fix it and update the page’s “Updated” date. - If a source has moved or changed, we replace it with the current version or remove the claim. - If experts disagree, we describe the disagreement instead of picking a side silently. - We never invent numbers, quotes or studies, and we don’t cite sources we haven’t read. Found something? Tell the allthingsN team through the contact options on [allthingsn.com/about](https://allthingsn.com/about/), and include the page URL and the source that shows the correction. ## What we don’t do We don’t give medical, legal or financial advice. Health and money pages summarize public guidance and research for general readers; your situation may differ. We also don’t run pop-ups or paywalls, and pages work without JavaScript. --- Source page: https://erroneo.us/about/ · More: https://erroneo.us/llms.txt