At the center of David Allen’s Getting Things Done approach is the “trusted system”. This is a system into which you can put everything you need to keep track of and trust that you will see it again at the right time. The David never says what exactly that system should be, just what it should be able to do. And so, the biggest question in the GTD world is this:
“What is the best GTD system?”
Now that’s a perfectly reasonable question to want to ask. You’re going to be investing a lot of time and energy and thought into this system. You’re going to put all of your projects into it. You’re going to put all of your actions to do into it. You’re going to ask your brain to trust this system and stop holding on to everything on its own. You want the best system. But asking for the best GTD system is like asking a carpenter, “What’s the best hammer?” It’s the wrong question.