In August of 2007, Blackberry’s stock hit an all-time high. But a few months before that, Apple introduced the very first iPhone. At the time, the Blackberry CEO said this of Apple’s new device: “In terms of a sort of a sea change for BlackBerry. I would think that’s overstating it.” We now know that it would have been impossible to overstate it. The New Yorker’s Vauhini Vara on how Blackberry fell. It’s also impossible to overstate the impact that these devices have had on our lives in a relatively short time.