QUOTE : We had portable music before the iPod, most commonly in the form of the Sony Walkman and Discman (and their competitors), but these devices played only a restricted role in most people’s lives—something you used to entertain yourself while exercising, or in the back seat of a car on a long family road trip. If you stood on a busy city street corner in the early 1990s, you would not see too many people sporting black foam Sony earphones on their way to work. By the early 2000s, however, if you stood on that same street corner, white earbuds would be near ubiquitous. The iPod succeeded not just by selling lots of units, but also by changing the culture surrounding portable music. It became common, especially among younger generations, to allow your iPod to provide a musical backdrop to your entire day—putting the earbuds in as you walk out the door and taking them off only when you couldn’t avoid having to talk to another human.