How a professor spends time

Going back to the university to work 8 hours a day at age of thirty something, and not being a student or professor, there's an advantage to it. You have the chance to look at the system with different perspectives, especially if you are involved in some of the tedious administration stuff. You realize the system is designed with a big flaw.

Then you start thinking, how can a system run by top scholars could have gone wrong. Until you read how Umberto Eco, the semiotic professor and famous columnist, spends his time. You see precisely where the system went wrong. They just don't spend time running universities.

I summarize it with percentages of possible working time noted in below table. The total hours available for one person a year is 8760 hours. Excluding sleeping and getting around in the city, there are about 4000 something hours possible working time. Unfortunately, they don't have time to play. (people usually assume their works are pretty much things they play).

Tasks	hours/y	% of working time
3 classes a week, 1 afternoon advising students	220	6.9%
exams	24	0.8%
examining theses	12	0.4%
faculty meetings and committees	78	2.4%
correting students' papers	235	7.4%
journal editing	50	1.6%
direct six books a year	300	9.4%
Review translation of his own work	500	15.7%
original writings	300	9.4%
weekly magazine column	156	4.9%
mails	624	19.5%
attending conference	372	11.6%
travel for conference	323	10.1%
sleep+shave, dress.. Meals	4197.5	-
2 hours for getting around the city	730	-

You can see how little time one professor can spend on faculty management and teaching students.