Luhmann wrote:

Regarding calendar based task management. This really makes no sense for
me. I have due dates, yes, but how I use my time throughout the day is
very fluid, and it would not make sense to try to put my tasks into a
calendar. Calendar entries are basically times that I can't do anything
else because I have a class or meeting or social engagement. If I were
to, say, write down that I will spend two hours writing in the morning,
the most likely scenario is that something else will come up at that
time which requires my attention and I won't actually do the writing
until the afternoon. Much more important for me is to know what I will
write that day because I have some notes or an outline that will enable
me to get to writing quickly without having to sit and remember what I
was going to write about. But I guess everyone has very different work
habits and jobs that lend themselves to different solutions.

This resembles my work flow almost exactly. I am not sure if I should say that great minds think alike, or misery loves company. ;)

--Ken