User:Bkell/Long-lasting vandalism

I spend quite a bit of time reading Wikipedia articles, and every once in a while I'll come across some phrase or sentence that doesn't jibe with common sense. So I'll dig through the article history and discover that it was added by some anonymous editor months ago with no supporting evidence and apparently nobody ever noticed. Sometimes other people have even come along later and copyedited the vandalism to correct capitalization or something without questioning the content itself.

Instances like these have taught me not to place full trust in the reliability of Wikipedia. Most of the examples below are rather obvious false claims, but there must be many other false claims that are not so easy to recognize and thus will remain unchallenged for longer.

Examples of long-lasting vandalism I've detected and reverted: