Working at the speed of e-mail is like trying to gain a topographic understanding of our daily landscape from a speeding train--and the consequences for us as workers are profound. Interrupted every thirty seconds or so, our attention spans are fractured into a thousand tiny fragments. The mind is denied the experience of deep flow, when creative ideas flourish and complicated thinking occurs. We become task-oriented, tetchy, terrible at listening as we try to keep up with the computer. The e-mail inbox turns our mental to-do list into a palimpsest--there's always something new and even more urgent erasing what we originally thought was the day's priority. Incoming mail arrives on several different channels--via e-mail, Facebook, Twitter, instant message--and in this era of backup we're sure that we should keep records of our participation in all these conversations. The result is that at the end of the day we have a few hundred or even a few thousand e-mails still sitting in our inbox.
From John Freeman, The Tyranny of E-Mail: The Four-Thousand-Year Journey to Your Inbox (2009).