If the forum IS used as an information resource (demonstrably true), then how can having some incorrect info in one place, and correct info in another (or multiple) places be better than having correct information in one place?
Because you don't really know what's correct or what isn't anyway. You are making a HUGE assumption - that people make valid corrections. How do you know that? It just isn't something you can even prove is true, so I do not understand why you keep clinging to that assumption.
Look, I gotta fix dinner soon, but here's the deal.
People using a forum should know, or should be told if they don't, that the discussion flows from the first post to the last, and that ideas are changed and new information is presented as it goes on. Things are corrected and mistakes are made, that's the ebb and flow of a forum Dave.
That's WHAT A FORUM DOES/IS. It's a flow of discussion to follow and learn from, yes even the mistakes and how they are corrected by others. It's in the thread <--.
If you just want correct info up front just allow people their own Blogs with unlimited editing. I guess, hell I don't know, but that sounds like what you really want. It ain't a forum, but it would fullfill your desires.