“Gallery visitors did not tell Picasso to invent cubism. Jazz fanatics did not suggest that {{w|Miles Davies}} should work with hip-hoppers. Moviegoers did not propose to Lars von Trier, the Danish film director, that he make Breaking the Waves. And customers sure as hell did not come up with the idea for CDNow or Amazon.com. If you want to do something really interesting and revolutionary, learn to ignore your customers.”