Answer capsule
An answer capsule is a self-contained paragraph of 40 to 60 words placed at the top of a section, designed to be extracted as-is by search engines and AI: a clear definition, a supporting figure, a complete sentence.
In practice
Every page on our sites opens each section this way: the question as a heading, the compact answer immediately below, the development following. This format serves three readers at once — the time-pressed human, the Google snippet, and the AI-generated answer that cites its source. A weak capsule is recognizable because it promises instead of answering.