As many of you know I am investigating the problem: how to combine list-based GTD methodology with scheduling-time-blocking approach to making things happen. There's a popular saying: "What doesn't get scheduled, doesn't get done." During my research effort I am currently reading "Sprint: How To Solve Big Problems And Test New Ideas In Just Five Days" written by Google Ventures team. They recommend "a unique 5-day process for solving tough problems". What is the main "uniqueness" of this process? They gather several people from the company and close the door of the conference room for 5 days. Not literally but the idea is: to solve a problem the team must not be distracted. So it is an example of extreme, week long time-blocking. They also recommend "working alone together" as opposed to brainstorming. Interesting book!