" The second reason that a culture of connectivity makes life easier is that it creates an environment where it becomes acceptable to run your day out of your inbox—responding to the latest missive with alacrity while others pile up behind it, all the while feeling satisfyingly productive (more on this soon). If e-mail were to move to the periphery of your workday, you’d be required to deploy a more thoughtful approach to figuring out what you should be working on and for how long. This type of planning is hard. Consider, for example, David Allen’s Getting Things Done task-management methodology, which is a well-respected system for intelligently managing competing workplace obligations. This system proposes a fifteen-element flowchart for making a decision on what to do next! It’s significantly easier to simply chime in on the latest cc’d e-mail thread. "

― Cal Newport , Deep Work: Rules for Focused Success in a Distracted World