" Welcome to the real-life experience of “knowledge work,” and a profound operational principle: you have to think about your stuff more than you realize but not as much as you’re afraid you might. As Peter Drucker wrote: “In knowledge work . . . the task is not given; it has to be determined. ‘What are the expected results from this work?’ is . . . the key question in making knowledge workers productive. And it is a question that demands risky decisions. There is usually no right answer; there are choices instead. And results have to be clearly specified, if productivity is to be achieved.”* "

― David Allen , Getting Things Done: The Art of Stress-Free Productivity