@Murray What about collecting? Why collect something when you can just do it in less than 2 minutes?
My understanding is that the two minute rule doesn't apply there. Collecting/capturing doesn't take anywhere near as much time as organising and tracking an action, and many of the items that are collected will just be trashed in the processing phase. David has said pretty much this about his mind sweeps.
...which doesn't mean you have to collect it rather than do it. It just means that the 2 minute rule doesn't apply, if I'm not mistaken.
I haven't got the book handy right now but here is a quite from one of David's "Two Minute Tip" podcasts:
"First of all, the key thing is to decide what’s the very next action on something I need to do about any of this change that’s happening, any of this stuff I’m involved in right now. What would I need to do next? Once you’ve decided very clearly and specifically what that is if you can do it in less then two minutes, do it right then. Teflon, boom! In and out."
David Allen discusses mental RAM, rapid refocusing, and checklists, and how they relate to GTD and performance improvement.
gettingthingsdone.com
"decide what's the very next action" strongly implies we doing more than just capturing something that's on our mind and we are clarifying/processing.