[jelmore]

I seem to remember David Allen saying in an interview somewhere that he intentionally kept away from discussing implementing a GTD system in any particular software or product because he wanted people to focus on the principles and wanted to keep the book relevant -- in 10 years, we may not be using PDAs or computers or cell phones the way we are now, and he didn't want to book to become dated.

I also think that there is a type of person that will nitpick the details of the system and use those nitpicks as faults of the system as a whole.

(From a completely mercenary point of view, the intentional vagueness of the GTD book probably doesn't hurt DavidCo's consulting services business, either.)