I'd like to know what they mean by "believing in privacy". If I understand the Wikipedia correctly[1], privacy is just the sum of information that is exclusive

I'd like to know what they mean by "believing in privacy". If I understand the Wikipedia correctly[1], privacy is just the sum of information that is exclusive to an entity (person, circle of friends, family, company…). So, does Zuckerberg believe there is little or no such information? Or does he believe there should be little or no such information? Does he believe that people don't control their privacy, or that they shouldn't? When he says he "doesn't believe in privacy", does he state a fact, or a political opinion? [1]: http://en.wikipedia.org/wiki/Privacy http://en.wikipedia.org/wiki/Privacy