> Monastic and bimodal modes are rather reserved for professions that can manage work without intensive communication with people, like writers, scientists, researchers, etc.<p>Many or most scientists are academics. Communication time dominates the job of a professor. Teaching, and the invisible job of running a university takes between 1/3 and 2/3 of a 40 hour week. Both of these are based around strict schedules, so the actual schedule in a non-sabbatical, non-buyout semester ends up journalistic or approaching rhythmic at best.<p>Thus the deep work slots are very precious. I did most of mine after dinner, or after kids' bed time. A professor I respect, well known for his reliable productivity, did a couple of hours of email at 2am for >20 years to create time in the work day for the real work.<p>Professor is a wonderful job, but making time to be a productive scientist is a constant struggle. This is why graduate students feel the science is delegated to them.