There is an assumption that most work environments are not like factories anymore. I wonder how true is that, even in "modern" fields such as corporate software development or maybe accounting. It seems these are still overwhelmingly often series of short 2-3 hour tasks that depend on immediate input from others - for task definition, or details needed for implementation.

Also, as other comments mention, work is used for socializing. I know many people for whom work today is one of the major forms of social interaction. As a society, we just do not sit on benches in front of the houses, talking to neighbors as they pass by, anymore. That maybe for better of for worse, but it would be good to construct some alternatives, before we remove the synchronous workplace.