**Bullshit Jobs: A Theory** is a [book](List_of_Libertarian_Socialist_Books "wikilink") written by [David Graeber](David_Graeber "wikilink") that outlines how between 30-40% of jobs within modern [capitalist](Capitalism "wikilink") economies are 'bullshit'. The book explores the causes, effects and solutions to this problem, with some interesting historical notes and philosophical questions thrown in.