Editorial and correction policy

A page starts with the question it answers and the limits of that answer. Calculators show inputs, formulas, assumptions and interpretation. Household guides explain a first step, differences by situation and actions to avoid.

Numerical or safety claims should point to checkable material when available. General advice without a verified source is not presented as an official fact.

For legal rates and rules, we look first for the responsible government or public agency. For appliance use and cleaning, we look first for the manufacturer manual, checking the country, year and model.

A blog or forum account is not treated as an official standard. An unlinked instruction to check a label is shown as a checking note, not as a source citation.

Rates, taxes and wages can change. Check the basis date on the individual page; a source publication date and a page update date may differ.

Wash temperatures, cleaner concentrations, run times and material compatibility vary by product. Follow the actual care label or manual first, and review unsupported precise claims before relying on them.

Calculation functions have automated checks for normal cases, boundaries and invalid inputs. We also check that worked examples and displayed results use the same basis.

Figures tied to rules need a date and scope. A result is a guide and may differ from an actual bill, contract or filing.

When a new primary source or an error report changes an answer, we review the affected claim and its scope. The page update date changes when the content is actually revised.

Older pages are being reviewed in stages for sources and product-specific limits. We do not claim credentials or hands-on tests that cannot be documented.

Send the page URL, the sentence or result in question, and any source you have to fgart146@naver.com. You do not need to send private inputs.