You can see the revision history: http://stackoverflow.com/posts/23569710/revisions http://stackoverflow.com/posts/23569710/revisions For a popular question li

You can see the revision history: http://stackoverflow.com/posts/23569710/revisions http://stackoverflow.com/posts/23569710/revisions For a popular question like this, it's kind of like an arms race to see who can get the top answer. People keep one-upping themselves.