Historical Vedic religion the central ideas and theosophy in the Vedas, and synergistically integrated new ideas. Of the major traditions that emerged from Brahmanism are the six "darshanas", particular the Vedanta, Samkhya and Yoga schools of Hinduism. Vedic religion was followed by Upanishads which gradually evolved into Vedanta, which is regarded by some as the primary institution of Hinduism. Vedanta considers itself "the purpose or goal [end] of the Vedas." There are some conservative schools which continue portions of the historical Vedic religion largely unchanged (see Śrauta, Nambudiri). Of the continuation of the Vedic tradition in a newer sense, Jeaneane D. Fowler writes
Vedas (the early Iron Age) as terminus post quem for the Atharvaveda. Transmission of texts in the Vedic period was by oral tradition, preserved with precision with the help of elaborate mnemonic techniques. A literary tradition is traceable in post-Vedic times, after the rise of Buddhism in the Maurya period, perhaps earliest in the Kanva recension of the Yajurveda about the 1st century BCE; however oral tradition of transmission remained active. Witzel suggests the possibility of written Vedic texts towards the end of 1st millennium BCE. Some scholars such as Jack Goody state that "the Vedas are not the product of