What counts as original research on Wikipedia?

Original research includes any new ideas, interpretations, data analysis, or conclusions that haven't already been published in reliable, independent sources, even if they’re accurate. Wikipedia has a strict policy against original research to maintain verifiability and neutrality across articles.

This means you can’t add your own expert opinion, unpublished insights, internal data, or firsthand knowledge to a Wikipedia page. You also can't combine facts from multiple sources to draw a new conclusion, even if that conclusion seems obvious. Every claim must be backed by a reliable source that makes the same point explicitly.

Wikipedia's role is to summarize what has already been documented elsewhere—not to break news, advance arguments, or publish new scholarship.

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What is "due and undue weight" in Wikipedia articles

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