A Wikipedia article (Articulus Wiki Wikipaedius), though widely considered to be unintelligible to all but fellow wikipedia articles, is a good source of information for the keen mind, except when they're not. The idea for Wikipedia came from the old joke about encyclopedias in the Soviet Union having looseleaf pages, hence anyone can edit, revert and delete Wikipedia articles as they so wish. At this point the authour decided on a tense and stuck with it. If you play a Wikipedia article and Dark Side Of The Moon by Pink Floyd at the same time, it all synchs up.