Right, but people without a To Do list also spend time thinking about the priority of things and what needs to be done.

In fact, that's my personal takeaway from GTD- that the list is there to stop you from thinking about upcoming stuff all day, because it's saved somewhere and can be shuffled at a calm minute.

How much time to do you spend thinking about what needs to be done next?

Negligible. What I need to do is usually either what I had to do yesterday and the day before, or an immediate reaction to some event.

What I want to do is best decided in the moment, when all the information (e.g. my mood, availability of other people) is available.

The exceptions don't take more than maybe a couple of minutes per week.

I didn't say anything about scheduling - just keeping all my projects and plans in one place, so I can refer to them imediately, and don't have to worry about remembering them. If this wouldn't benefit you, you must be living an exceptionally simple life.

You never find the need to site down, with all your notes and plans before you, to figure out what to do next, or how to do it? You must live an exceptionally simple life.

You must live an exceptionally simple life.