- For guidelines regarding the relevance of articles or subjects as a whole, see Wikipedia:Notability. For guidance on the relevance of links to outside websites, see Wikipedia:External links. For information on what articles are appropriate (relevant) for Wikipedia, see the official policy: Wikipedia:What Wikipedia is not. More specific guidelines for inclusion may be provided by a WikiProject whose scope includes the article in question.
 | This is an essay. It contains the advice or opinions of one or more Wikipedia contributors. This page is not an encyclopedia article, nor is it one of Wikipedia's policies or guidelines, as it has not been thoroughly vetted by the community. Some essays represent widespread norms; others only represent minority viewpoints. |
 | This page in a nutshell: Wikipedia, by its nature, is an engine for discerning relevance. |
On Wikipedia, relevance is simply whether a fact is in the right article, based on whether it pertains to the article's subject. Usually this is obvious. When not obvious, relevance is decided by the editors of the article, based on what is considered likely to be useful to readers. The give and take between editors functions as a social-engine for discerning relevance. Wikipedia policy maintains the health of that social engine but does not itself act as an engine for discerning relevance.