mommoe436 said:I expected the discussion to go into why the guidelines are there, the psychology/brain workings behind it, etc.
I'd like that, too. In fact, that would be a more important goal, but you can't get to the discussion of "what are the psychological mechanisms behind the practices of GTD?" without defining the practices of GTD.
Edited to add: I'm not ignoring the rest of your post; I just had a moment here and wanted to clarify one specific point that apparently I miscommunicated.