Do It Tomorrow: Sequencing Tasks, False Emergencies

I'm reading through the book Do It Tomorrow book by Mark Forster ...

From Chapter 6, "Emergency, What Emergency?"...

Now how does Mick impose order on the random sequence of [tasks]? He does it by creating some distance between himself and the [tasks]. He has a buffer zone in which the random [tasks] can accumulate and be put into order...Notice that Mick does not just create distance; he also imposes an ordered sequence...
It could be argued that Autofocus (AF) has no sequence. However, it does; you determine an ordered sequence of tasks each time you go through your AF list.

Your 'default setting' should be 'Do it tomorrow.' You should be prepared to change it only when there is a very good reason. If you are in doubt, then it can wait till tomorrow! The immeidate degree of urgency should be restricted to emergency services and to such situations as face-to-face interaction with customers, helplines, order lines and similar. Other than those, only genuine unexpected emergencies should qualify [to do it now]...
How freeing that concept is! It seems that we live in a world where most of us are expected to read our e-mail every few minutes and respond instantly. Constant switch-tasking like this only hurts our productivity.