I love GTD but have a problem with it.
My work schedule involves many different projects for different clients. Each project is about a different technology or different industry (I'm a management consultant).
Following the GTD recommendations, I've been listing all my NAs in separate lists for @ Phone, @ PC, @ Desk, etc.
But that means that when I'm at the phone and I run down my @ Phone list, I'm making a call related to project A, then one regarding Project B, then Project C, etc.
The problem is that every time that I have to switch from one project to another, I have to take out a file (both physically and in my head!) and switch over to its contents. Refocusing is a huge time waster! I have to stop thinking about Project A and refocus on Project B.
Wouldn't it be a lot easier to devote a solid block of time to just one Project (i.e. Project A)? Who cares that it involves work on a laptop, a phone call, and walking down the hall to talk with a colleague? Maybe I would have to delay some NAs until I'm back at the office or in front of a laptop, but I would get more done because I would be focused on one project.
But once you've gotten everything out of your head and onto paper, isn't switching between projects the biggest reason for lost productivity?
Why not just work from a project-oriented list of NAs rather than sort them by Phone, Computer, Desk, etc.?