Wikipedia failed?

In an article on the Washington Post, the author seems to be saying that Wikipedia does not work and often has wrong information. His example was the myriad of changes that happened in Kenneth Lay's article after his death. I think that Wikipedia showed that it did work, it didn't fail. By then end of the same day of his death, the story was set straight with links to the actual press releases. Even though there was a lot of changes in the meantime, the final article was truthful, and you can easily go through the history to see how it got to that state.