As editors insert additional information, the article might actually get worse, stylistically! When new facts are not integrated properly, they can upend the article's structure and muddy its writing style. (Sometimes this happens when the editors adding those facts aren't familiar with the topic or aren't fluent at editing Wikipedia.) If this continues, Artie could be destined for mere mediocrity. A strong-minded editor could step in and restore an earlier, cleaner version, do a thorough re-write, or take a red pencil to incremental changes that were not, in fact, beneficial.

When adding to articles, keep the article's overall structure in mind. Although adding a new fact onto the end of a convenient paragraph is easy, integrating that fact squarely into the article is much more helpful.

On a more positive note: Articles, on average, tend to improve over time.