[jhbadger]

Wikipedia is generally excellent on established scientific and technical topics in science and math and things. Where people seem to have issue with it are topics with more controversy -- a history of nation X can be seen as wrong or biased to people of country Y because it may refer to borders, causes of wars with its neighbors, etc. Even citations don't really help because critics will claim the citations are biased. Obviously printed encyclopedias also had this issue but typically people just accepted that Britannica would support the US/UK view of the world.