If the definitions of open and closed are so well understood, I'm sure someone will be kind enough to post them here, or at least link to them. :) Also, that's

If the definitions of open and closed are so well understood, I'm sure someone will be kind enough to post them here, or at least link to them. :) Also, that's the first time I've been called an Apple fanboy. In fact given my concluding paragraph I'm amused you could draw that conclusion. (FWIW I don't own a single Apple product.)