From Macworld 2008: the iPhone Shuffle, which has no display and a single button that dials a random number from your phonebook. “Our research showed that people don’t care who they call as much as they care about being on the phone,” said Jobs. “We also found that most cell phone users hate routine, and prefer to be surprised. That’s just as true for people answering calls as it is for people making them. It’s much more liberating, and far more social, to call people at random than it is to call them deliberately.”