The Emperor has no Clothes
New knowledge and original research is openly censored in Wikipedia, and in my experience its editors seem to be proud of it. As such, it can never have the latest, greatest knowledge. It is at best an historical record of past 'experts' created by self-proclaimed 'experts' who are looking more at the Wikipedia rule book than they are at logic.
In effect, Wikipedia is a snapshot of the scholastic chaos that has been created by a global educational system that has abandoned practical application for concepts and principles. It does a good job of recording the disparate mess of knowledge our current global band of 'experts' has created with no purpose in mind.
If you look exhaustively at the term 'creativity' as an example, the term has scores if not hundreds of definitions across disciplines, and the number is growing every year. These definitions are often contradictory, but most often these are 'slight variations' as one moves from one discipline to another. The result is knowledge chaos, that wikipedia seemingly dutifully, but not completely, records.
If I want I'm sure I could go out and add a hundred or so other existing 'expert' opinions on the term. But I'll suffer the wrath of the editors if I try to make some sense of this definition soup. For you see, Wikipedia is not interested in solving the problem of too many disparate definitions, it instead tries to amalgamate the chaos of unintegrated scholastic 'expert' opinions into one article full of disparity, error, and chaos as it exists today in academia.
Our entire global educational system is founded on this concept of expertise, and yet no one can agree on a definition. That because expertise is political, not logical. Wikipedia and its sister Citizendium are just showing our world clearly that they concept of expertise is bogus and that what we really need is a rational logic test akin to scientific method to 'prove' knowledge.
Knowledge is one, so the concept of the wiki is a powerful concept. But that said, as long as knowledge building is rooted in the politics of expertise instead of logic (in academia or online), society will simply fall deeper into knowledge chaos and undo complexity.
We used to be able to absorb this chaos, but today, new knowledge is being created at an exponential pace and as such, our methods for managing it are breaking down. The entire 'discipline' of knowledge management is toothless and lame in the face of this problem. It is a weak variant of instructional design that does not comprehend practical application, the basic principles of economics, or the entire lifecycle of knowledge.