http://en.wikipedia.org/wiki/Externality http://en.wikipedia.org/wiki/Externality Thinking of it in terms of morals is rather unproductive. It's just one of th

http://en.wikipedia.org/wiki/Externality http://en.wikipedia.org/wiki/Externality Thinking of it in terms of morals is rather unproductive. It's just one of the ways markets fail.