This might be not related to the subject in some senses, but is a question in my mind. Browsing Wikipedia and others for understanding a mathematical topic often made me unsatisfied. Because I see that I should read an ambiguously written and hardly symbolized content just to find out the concept while it is already simply understood. Why do mathematicians try making understanding things which are simple too hard? I believe that from those guys there are many love to write just their names on 10 pages full of formulas (completely personalized use of Greek letters) while the simple solution is just writing their names! for introduction. It is simple recently (if not whole the history) mathematicians have serious fear if they provide solutions understandable, they are not knowledgeable! There is a very big but missed difference between symbolization which is for simplification of understanding and demonstrating concepts and encrypting thing.