Focus blocks get broken. What happens in the twelve minutes after the interruption decides whether any of them amount to anything. A re-entry protocol, with honest numbers.
The framing that admin is a lesser category made me do it badly, at bad times, resentfully. Scheduling it as work rather than as leftovers changed both halves of the day.
Not two and a half hours of work — two and a half hours of the concentrated kind. Once I had a real number, most of my productivity habits stopped making sense.
The standard advice is to protect long uninterrupted stretches. When that is not available, the useful question changes from how to avoid interruption to how to cost it less.
