I'd like to learn something from the design of HTTP protocol - why is there, for example, "Not found", following the "404" code? Wouldn't the number itself be sufficient?
closed as not constructive by Kenny Rasschaert, Bryan, mdpc, Ward, Zoredache Jan 14 '13 at 21:34
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Basically it allows the server to be more detailed about the response in case the application decides to display it. I've never seen it used in practice, but the protocol allows it.