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Line 9: In the [[English Wikipedia]], '''verifiability''' means other people using the encyclopedia can check that the information comes from a [[Wikipedia:Reliable sources\|reliable source]]. Its content is determined by previously published information rather than editors' beliefs, opinions, experiences, or [[Wikipedia:No original research\|previously unpublished ideas or information]]. Even if you are sure something is true, it must have been previously published in a reliable source before you can add it.{{efn\|This principle was previously expressed on this policy page as "the threshold for inclusion is '''verifiability, not truth'''". See the essay, [[Wikipedia:Verifiability, not truth]].}} If reliable sources disagree with each other, then maintain a [[Wikipedia:Neutral point of view\|neutral point of view]] and present what the various sources say, giving each side its [[Wikipedia:Neutral point of view#Undue weight\|due weight]]. All material in [[Wikipedia:Mainspace\|Wikipedia mainspace]], including everything in articles, lists, and captions, must be verifiable. ~~All quotations~~Additionally, ~~and~~four ~~any~~types ~~material~~of ~~whose~~information ~~verifiability~~are ~~has been challenged or is likely~~required to be ~~challenged, must~~followed ~~include~~by an [[WP:INCITE\|inline citation]] to a reliable source that directly supports{{efn\|name="directly supports"}} the material. ~~Any~~The ~~material~~four ~~that~~types ~~needs an inline citation but does not have one may be removed. Please immediately remove contentious material [[Wikipedia~~are:~~Biographies of living persons\|about living people]] that is unsourced or poorly sourced.~~ * [[Direct quotation\|direct quotations]], * material whose verifiability has been [[Wikipedia:CHALLENGED\|challenged]], * material whose verifiability is [[Wikipedia:Likely to be challenged\|likely to be challenged]], and * contentious material [[Wikipedia:Biographies of living persons\|about living people]]. Any material that needs an inline citation but does not have one may be removed. Please immediately remove contentious material [[Wikipedia:Biographies of living persons\|about living people]] that is unsourced or poorly sourced. For how to write citations, see [[Wikipedia:Citing sources\|citing sources]]. Verifiability, [[Wikipedia:No original research\|no original research]], and [[Wikipedia:Neutral point of view\|neutral point of view]] are Wikipedia's core content policies. They work together to determine content, so editors should understand the key points of all three. Articles must also comply with the [[Wikipedia:Copyrights\|copyright policy]].

Wikipedia:Verifiability: Difference between revisions