Though, I think I made may homework quite good and read through about pages for Mathematics and MathOverflow, I still have no idea, what is the difference between these two sites and what is the purpose to keep them separate, instead of integrating them together?
Again, since both Mathematics and History exists, I have no idea, what is a reason for proposing History of Science and Mathematics? Why questions and answers about history of science and matehematics can't be asked in two former sites?
Not mentioning, that there are currently about five or more sites about pure programming. One for developers pros of particular language, one for developers in general, one for development contests one for development homeworks etc. etc. Are there any limits to this?
I understand, that we (many of us) want to have a lot of sites in Stack Exchange network. But, aren't we passing some thin border, that we shouldn't pass through? Isn't Stack Exchange network slowly falling apart? How many different sites about each one, single field of expertise we want?