Optim wrote:
Who decided which is the "primary" and the "secondary audience" of the English Wikipedia and when this decision took place?
It is called writing to your audience and is an age-old and fundamental concept. All it mainly does is instruct us on the focus and the order in which we organize information; The cultural expectations on what constitutes the proper coverage of a subject is going to be different for different cultures and in different languages.
Even what constitutes an encyclopedia differs by culture and language. Same is true for the ordering of actual articles - in one culture some topics concerning the subject are more important than they are in another culture. So the order in which those topics are discussed in the article may differ.
All English speakers are the audience of the English Wikipedia, but native readers - especially monolingual ones - will expect and need to have information organized in a way that is most useful and familiar to them. Replace "English" with any other language and the same applies there as well.
-- Daniel Mayer (aka mav)