Knuth versus Email (1999)
I had an uncle who was a vice president at a fortune 50 company.  The executives at the company were not allowed to have a computer at their desks.  They all had secretaries who dealt with email, calendars, spreadsheets, etc.  The point was that if they were sitting behind a computer doing time consuming clerical work required to interact with a computer, they were being distracted from much more important tasks.  The company was more interested in having people at that level who could delegate and organize than to actually do the work themselves.The skills and kind of work that makes a person successful at one level often leads to lack of success at another.