In this section Romila Thapar reflects on the function of the historian in general and more precisely on her approach to history. Nationalist historians had opposed some interpretations of Indian history made by colonial scholars but many were left unquestioned. Her generation of historians challenged colonial historiography on a larger scale and this also brought them into opposing some nationalist interpretations. Among these was the periodization of Indian history by James Mill into Hindu, Muslim, and British periods, and the theory that ancient India was a golden age that declined in the medieval period under Muslim rule. This questioning opened up many debates on a range of themes in the method of writing history, such as, the definition of a historical fact, priorities in historical explanation, testing the reliability of the data, as well as the incorporation of fresh and different data from archaeology.