This paper offers a historical appraisal of recent developments in the theory of very long run growth, focusing on three main areas: (1) linkages between wages, population and human capital (2) interactions between institutions, markets and technology and (3) sustaining the process of economic growth once it has started. Historians as well as economists have recently begun to break away from the traditional practice of using different methods to analyse the world before and after the industrial revolution. However, tensions remain between the theoretical and historical literatures, particularly over the unit of analysis (the world or particular countries) and the role of historical contingency.I thank Nick Crafts, Oded Galor, Sayantan Ghosal, Omer Moav, Joel Mokyr, Eugenio Proto, Joachim Voth and participants in conference or seminar presentations at Barcelona, Brunel, Florence, Glasgow, Helsinki and Royal Holloway for helpful comments and discussions. I am grateful to Paolo Malanima for making available unpublished data.