The persistence of tradition needs explanation as much as change. It may be that people cleave to ancestral ways through general inertia, but it is more likely that there are good and sufficient reasons behind such persistence, much as there are good and sufficient reasons for change.
The social scientist studying the modern world is inevitably struck by the importance of peasant rebellions. In some countries--such as Russia, Yugoslavia, Albania, China, Cuba, and Vietnam--peasant rebellions have helped bring about communist revolutions. In others--such as Mexico, Algeria, Kenya, and recently Angola--they have contributed toward the success of nationalist revolutions. In yet other countries--including Spain, Greece, Peru, India, Phillippines, Malaya, and Indonesia--they have helped shake, even though they have not destroyed, the foundations of the old order. The social scientist studying Iran, however, is struck not by the importance but by the conspicuous absence of any large-scale peasant rebellions in the modern era.