Information disclaimer
Use these explainers as background knowledge and a way to prepare better questions.
Health, money and technical decisions
The journal does not provide individual medical, financial, legal or engineering advice. An editorial pen name does not imply a qualification or specialist review. Do not change prescribed treatment or delay urgent care because of an article. For vehicle, electrical, gas and structural work, follow model-specific instructions, applicable rules and qualified professional advice.
Examples and photographs
Worked examples are illustrations, not guaranteed results. Photographs illustrate a subject and do not identify the people or places discussed as if they were independently reported events. Official sources should be checked for current conditions before acting on a guide.
Updated: 4 November 2026