Wikipedia: checkable

Article

May 29, 2022

In order to include content on Wikipedia, the content must be verifiable, and content cannot be included simply because it is 'truth'. By 'verifiable' here, we mean that users viewing a Wikipedia article must be able to verify that the content of the article is true from a trusted source. When editing a document, you must provide credible sources for content that has been challenged or may be raised. Otherwise, the content may be deleted. Verifiable is a key policy for Wikipedia articles, along with a ban on reader research and a neutral view. These policies determine what Wikipedia accepts. Those who edit the document should try to understand these three policies.

Duty to Present Evidence

Everything should be verifiable. The obligation to prove verifiability rests with the editor adding or restoring material. All citations and objectionable or probable material must be published and directly attributed to reliable sources. Sources should be stated clearly and in detail so that readers can find articles that support the content of the document in question. If there is no authoritative third-party source on the subject of the article, then such article should not exist on Wikipedia. Edits lacking a source may be removed, but editors may object to removal without giving them an opportunity to cite the source. If you want to request a source for an unsubstantiated explanation, you can think of moving it to the discussion forum. Alternatively, you can put a {{source}} frame within a sentence. Leave an invisible HTML comment, comment in the discussion box, or explain what you've done with an editorial summary. Don't leave unsubstantiated information in a sentence for too long, and don't leave unsubstantiated information about living people at all. For unfounded information about a living person, please boldly delete that part instead of asking for the source.

Source

Documentation must be fact-checked and rely on evidence published by third parties that it believes to be accurate. The source must be adequate to support the claim. In other words, great claims need great sources. All articles must be faithful to Wikipedia's neutral view, providing an impartial presentation of all major and major minority views published in reliable sources. In general, the most trusted sources are peer-reviewed journals and Books published by university presses, university-level textbooks, magazines, periodicals, and books from reputable publishers. In general, the more credible a source is, the more closely it has been scrutinized for finding facts, examining legal issues, and scrutinizing evidence and discussion of a particular matter. Academic, peer-reviewed periodicals are highly valued, and fields such as history, medicine, and science are the most trusted sources. Reliable, non-academic sources may also be used as sources in these fields, especially if they are mainstream publications that are highly regarded. The relevance of a source is always influenced by context. If the content of each source's content is different, it is stated in the document which side has which opinion.