Borisoff said:
As far as I got from posts David makes no division between work and home so you can do both at any time. It means I can learn Spanish or Play with my daughter at work if I feel that's more important then work-related tasks?
I think that this is a misunderstanding of what David Allen is saying.
Prior to the advent of the capitalist market system, there was usually no clear division between work and home. When I lived on a farm, work and home were the same. But in contemporary society, most people who earn a wage or salary--telecommuters excepted--go to a place called "work" which is different from the place called "home".
With the advent of cell phones and Blackberries, the line is becoming more blurred. But the line still exists. It's OK for me to walk around my apartment in my underwear; it's not OK for me to walk around the office in my underwear.
I don't think that David Allen is being paid $50,000 a pop to counsel CEOs to start walking around the office in their underwear. (I'd be happy to counsel them to do that but I am afraid no one would pay me.) In most places of work there is a rather clear demarcation between appropriate and inappropriate activity. As far as I can tell, David is not telling Fortune 500 CEOs to eliminate the distinction between appropriate and inappropriate activity.
What David does say is that, if you can, you should have one trusted system, not two. If I need to go to the office on Saturday, I want to have one calendar, so I can see what personal commitments I have planned Saturday. When I do my weekly review, I open up one system that contains all my NAs and projects--personal and work-related. I do not read David as advising me to tear down the wall between home and work; I do read him as telling me to create one trusted system of lists which contains all my commitments.
In fact, the whole reason David invented "contexts" was so that we could have one trusted system that is divided into parts based on what activities are appropriate and possible in different places. "Home" is one context in my system and "office" is a separate context. David encourages me to have one system because I have one mind (this claim that we each have one mind is controversial but I will, for the purposes of this post, take it as given). The trusted system is the tool I use for getting commitments out of mind. So, if I am at work and an idea about home pops into my mind, I put it into my trusted system and get back to doing my office-appropriate work.