Yeah, well wikipedia is not a reliable source to look information in because of this reason. Antibody's opinions can go on this. If you want to get good information, good sources are, governments, newspapers, magazines, and anybody who has authority, is an expert, or cannot be wrong, which is for example, the new york times newspaper. This is what debaters do. In a debate you cannot have false information or evidence. So they never look in wikipedia, otherwise they are classified as inexperienced, or there is no debate. I could post a joke on wikipedia on an article of the government of china. Wikipedia takes the information from anybody, as much as it maybe everybodies friend. There for I conclude, wikipedia is not a reliable source of information, and yes, it's editable by everyone, with the little edit button of the side of an article. One difference between free encyclopedia, and a payed encyclopedia.