Wikipedia:Verifiability: Difference between revisions - Wikipedia


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{{Content policy list}}

The threshold for inclusion in Wikipedia is '''verifiability, not truth'''—whether readers can check that material in Wikipedia has already been [[WP:SOURCES|published by a reliable source]], not whether editors think it is true. {{underdiscussion-inline|talkpage=Wikipedia talk:Verifiability/First sentence}}

To show that it is not [[WP:NOR|original research]], all material added to articles must be attributable to a [[WP:SOURCES|reliable, published source]] appropriate for the content in question, but in practice you do not need to attribute everything. This policy requires that all quotations and anything '''challenged or likely to be challenged''' be attributed in the form of an [[WP:CITE#Inline citations|inline citation]] that directly supports the material.<ref>See the discussion about sources in [[Wikipedia:No_original_research#Sources|WP:NOR]] that describes summarizing materials ''in your own words'', leaving nothing implied that goes beyond the sources.</ref> For how to write citations, see [[Wikipedia:Citing sources|Citing sources]].