Is hard work a vice? Many workers complain they have no joy in their work, but they keep going anyway. Some think it is time for all of us to slack off a little bit.
The big idea: Only 15 hours of work per week

Glossary
Economist - An expert in economics, the study of wealth and how it is produced and consumed.
John Maynard Keynes - One of the most influential economists of the 20th Century, best known for his Keynesian economic theories on the causes of unemployment.
Mediaeval - Relating to the Middle Ages.
Demanded - Asked for forcefully.
Routine - Something you do regularly and consistently — for example, you might go for a walk before breakfast every day.