Editorial policy

Our goal is simple: every answer should be correct, complete and easier to follow than what you would find elsewhere.

1. Original answers

We write our own explanations. We do not republish answers from Q&A sites, forums or textbooks. When a result or method comes from a specific source, we cite it in the article's references.

2. Use of AI tools

Our articles are drafted with AI writing tools. A draft is published only after it passes the checks below, and any article that fails them is corrected, rewritten or discarded.

3. Verification

• Independent fact-check: every draft is checked by a separate verification pass that recomputes each calculation and derivation, checks definitions, conditions and code, and either approves the article, corrects specific errors, or rejects it.
• Automated checks: every equation must render, articles must meet length and structure standards, and internal links must resolve before an article can be published.
• Calculators: each calculator is covered by automated tests against known values.
• Human review: an editor spot-checks a regular sample of published articles and reviews every article a reader reports. Articles that show "Reviewed by" have been read in full by the named person.

4. Updates and corrections

Articles show their last update date. When we correct a substantive error, we update the date. Reader reports are read and answered through the contact page.

5. Independence

We do not accept payment to publish, link to or rank content.