In 1996, global music sales were close to $40 billion. In 2013, global music sales were a mere $15 billion, a decrease of 62%. Who’s to blame? Well, if you ask the recording industry, they’ll say internet file sharing. Yet a number of people, including a few economists in peer reviewed studies, say that file sharing has no effect. Who is right? Nova Southeastern University’s Copyright Officer, Stephen Carlisle, takes you through the statistics and the studies to find out.