short term memory...
Musashi ,thats interesting, because I've been thinking something similar too but without really articulating it.
[I've been runnng GTD since around Feb. this year.]
However when I read Brents post asking for specifics examples, at first I coudn't remember one!
This area is subjective, = harder to assess.
Going off on a rabbit trail, I heard that Napoleon could dictate five different letters to five secretaries simulataneously, switching between them, and remembering where he left off. Also that Gauss forbade students in his class from writing notes down (don't know the reason). I'm sort of groping toward a question: do we need in some way to build up our capacity to remember things, and capturing everything on lists (so we can take them out of our mental RAM) mitigates against that?
...Back from the rabbit trail
Brent, 15 minutes after starting this response I remembered an example!
This morning before going to the gym I thought 'must remember to (a) use the barbell to test a slight strain I had recently and (b) use the Tanita (specialist) scales'.
I didnt write either down. Well, I remembered (a) but forgot (b).
Problem is, this example is so subjective I could easily have done that before I started on GTD.
Another possibility that using GTD has made me more aware of actions , therefore more likely to notice & the ones that get missed.
But it does feel 'obvious' that if someone drops the habit of remembering things (replacing the act of remembering with a written task trapping system) then they are less likely to remember things.
Then again maybe Musashi and I committed the same youthful indiscretions!