Step 2 to GTD Mastery is: I have a calendar, which is always on hand.
As I wrote about in my current implementation, my calendar is my cell phone (Nokia 2125i). It’s easily pocketable when I’m on the go.
Step 3 to GTD Mastery is: I use my calendar for appointments and day-specific items only.
Check. The main items in my calendar are meetings and daily/weekly tasks. Everything else is dumped into my HipRock.