I believe that the users of Wikipedia will approve my observation that many of the philosophy, arithmetic and concept articles are really of good quality. One can learn from them. It is very difficult to learn and imbibe the actual meaning of concepts in the field of sciences. You have to read again and again the same thing and as many elaboration on a concept in order to fully appreciate the meaning behind the concept. Some of the articles in these categories on Wikipedia are worth praising.
However, today I came across an article on Open System and Closed System which covered the definition for different field of knowledge. I was really impressed by the opening lines. I reached this article while I was trying to search for Reinhart Koselleck, a theorist in History. But this article has studied the relevance of concept of open system and closed system for all the sciences. Before, I read further, as it is a practice with me, I tried to check the discussion and also the edit history. There was no discussion as such. However, in edit section, I found that it was a fresh article which was just started in the month of April 2009. The writer is one Nbaig. I tried to check the User link. I found that the same article appears there also. Similarly, in the Discussion section of the User, I found that he was well received by one Marcel Douwe Dekker but again below his invitation and welcome message the article again reappeared. It is surprising. Should the Wikipedia veteran Editors look into this incongruity!? It must be taking unnecessary space on their server. I have yet to read the whole article but this feature has diverted my attention.
Open and closed systems in social science - Wikipedia, the free encyclopedia