I want to ask about mind sweep. I've made it the first time I started with GTD. Now, I want to get better in project horizons to know to make better decisions, so I've bought Making it all work. And I'm in the fourth chapter, and it's talking about mind sweep. My question is, when is it neccesary to make mind sweep again? Sitting and writting one thought in one paper for severals hours isn't something of every day, I guess. so I want to know when it must be done. Now I write everytime something appear in my head. When do you make a mind sweep?