So, there's a lot of talk on the Internet about privacy. Some people say that privacy is only desired by those who have something to hide. Some people insist that privacy is a human right that should never be violated without consent.
There's only one problem with this whole debate: what is privacy, and why would anybody want it? This is rarely defined – most people just seem to assume that "everybody knows" what privacy is, so why would it have to be explained?
Well, I'm not a big fan of "everybody knows." And in fact, it turns out that privacy actually means two different things, which many people use interchangeably without specifying what they're actually talking about. So to help clear up some of the debate online, and to hopefully shed some light on how it can all be resolved, here are some clear definitions and discussions of what privacy is, and why people would want it.