Scholars have debated the relationship and differences within āstika philosophies and with nāstika philosophies, starting with the writings of Indologists and Orientalists of the 18th and 19th centuries, which were themselves derived from limited availability of Indian literature and medieval doxographies. The various sibling traditions included in Hindu philosophies are diverse, and they are united by shared history and concepts, same textual resources, similar ontological and soteriological focus, and cosmology. While Buddhism and Jainism are considered distinct philosophies and religions, some heterodox traditions such as Cārvāka are often considered as distinct schools within Hindu philosophy. COUNT 5
QSN1 What have scholars argued about with regards to nastika and astika philosophies? ANS1 relationship and differences QSN2 In what centuries the writings of scholars been used to debate the philosophies? ANS2 18th and 19th QSN3 What are Buddhism and Jainism regarded as in relation to religion and philosophy? ANS3 distinct QSN4 What are other schools regarded as within Hindu philosophy? ANS4 distinct schools QSN5 How available are the sources of knowledge on Indian philosophy? ANS5 limited