We strive to make Wikipedia as accurate and as good as possible. If you see something you know is wrong, be bold and fix it. If you see something that seems wrong, leave a note on the talk page and remove questionable assertions if no supporting evidence is provided. You can also use theafter a statement to add a "citation needed" tag. Peer review for accuracy and quality happens constantly through the Recent changes page and watchlists. It also can be solicited on Wikipedia:Peer review, Wikipedia:Article assessment, and Wikipedia:Good articles/Nominations. If you believe an article is really good, nominate it at Wikipedia:Featured article candidates. More sophisticated approval mechanisms are under constant discussion. Regardless, we do not guarantee accuracy and have a variety of other disclaimers. These are linked from every page, so please do not add more disclaimers to articles!
Accuracy, quality and peer review
Read more: Wikipedia:Replies to common objections