I find Wikipedia tremendously useful and have made modest acknowledgement of that financially. That said, I tried to get them to correct/augment something they had based on a thesis from the 1970's at a top US school. The matter could have been verified but instead it was rejected out of hand and so the content on Wikipedia is less than it might have been. I had a sense the matter was handled with great dispatch and finality.
There is no source that would prove that Armin Haken is his son, and so unfortunately Armin's work cannot be mentioned in the context of the article, as apparently somebody tried to do before me. (I actually read Armin's article that was mentioned on Wikipedia and then encountered Wolfgang Haken in a different context, and I was wondering if he is the same guy.)
So, the usability of Wikipedia is decreased (ironically, it can still be found in the history). I wish they took a more nuanced view on source reliability than just black and white.
