Yesterday night I visited a cosy bar, where quite a few enthusiastic people had gathered to celebrate the release of a book. On stage were the author, the publisher and a journalist to discuss the process of research and writing. They agreed it was hard work.
I returned home late, and passed some workers who were washing a noise-screen along the highway. (100.000 cars are passing here every day.) They were professional and worked very fast. The screen is about 1500 metres long and 3 metres high. Some hard work, too.