Piracy can also be a source of innovation, if someone takes a product and then modifies it in a popular way. In music unofficial remixes can boost sales of the original work. And in a recent book, “The Pirate’s Dilemma”, Matt Mason gives the example of Nigo, a Japanese designer who took Air Force 1 trainers made by Nike, removed the famous “swoosh” logo, applied his own designs and then sold the resulting shoes in limited editions at 0 a pair under his own label, A Bathing Ape. Instead of suing Nigo, Nike realised that he had spotted a gap in the market. It took a stake in his firm and also launched its own premium “remixes” of its trainers. Mr Mason argues that “the best way to profit from pirates is to copy them.”