QUOTE(JoseClutch @ Fri 27th February 2009, 8:50am)
Oh, most sources are biased, terrible, and full of errors.
But you can not do any better as Wikipedia. If Wikipedia's end accuracy ends up comparable to other respectable publications, that is not so bad. Only a fool would believe you can publish anything and not have it be full of errors. At least, no one ever has, so the empiricist in me (which is ~100% of me) is satisfied.
There's quite a difference between peer-reviewed journal stuff where the article is written and sweated over from days to months, then goes through an editorial cycle of peers lasting months, then goes BACK to the original author(s) for changes, then goes BACK to the reviewers to see if they are satisfied, THEN to the journal editor who copyedits it, then the markup manuscript goes BACK to the original author to see if THEY find errors, then is published. And we still have post publication erratum to go.
After that, the community of scientists, or whomever the professional community is, has a whack at it. And they're not shy, nor are they limited to letters to the editor (though they have that, also). They write their own articles undermining the articles that go before, if they think their data is wrong, or the conclusions drawn from them are bad.
Nothing even remotely like this happens at a newspaper. The fact-check is some schlub who has a couple of hours to do it. The subject MIGHT if they are lucky have some stuff read to them over the phone (a fraction of the article) but never sees the whole article, with his contributions, in context, before publication. For many newspapers this is actually POLICY. Copyedit takes minutes and the original writer may or may not see the result. Cycle-time from article start to publication can be a fraction of a day. Post-publication eratum is limited to really embarassing things like calling a senator a representative or getting their state wrong, and is designed to save the paper's face, not get it error-free.
The only comparable thing to peer-review that happens in historical writing, is historical journal articles and books which boil down the truth of events from journals, testimony, and other evidence, in the ensuing months and years after "primary" news stories take the first swing.
But on Wikipedia, news articles are held to be on par with science publication. Yep, the papers of Nov. 23, 1963 report that the president was shot and wounded mainly in the back of the head, so it must be true.