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

We use AI writing tools to help draft explanations and worked examples. AI drafts are never published as-is. Each draft goes through the checks below, and any article that fails them is rewritten or discarded.

3. Verification

• Calculations: every numerical result in a worked example is recomputed independently, by a separate model pass and, where possible, by computer algebra.
• Formulas: every equation is checked to render correctly and to match a standard reference.
• Calculators: each calculator is covered by automated tests against known values.
• Human review: an editor reviews each article for accuracy and clarity before it is published. Articles with the most readers are reviewed line by line.

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.