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It is odd that the origin of the Vedas is not discussed here. It would seem to be relevant given that it is believed that they weren't of Indian origin. In that discussion it should be mentioned that while some of the Vedic ideas are clearly tied to Indo-European beliefs found elsewhere, some seem more likely attributable to the Harappan civilization. There is no mention of yogic postures elsewhere in Indo-European literature and there has been pottery in found in Harappan ruins that suggests yogic postures.
The main source for this section is Feuerstein, who willingly admits that "most scholars reject the notion that Tantra originated in the era of the Vedas or earlier" (Feuerstein, "the Path of extacy", p.15) Tantra was a recation to the fragmentation and feudalisation of Indian kingdoms in the "Late Classical Period" of ca. 500-1100 CE (Michaels 2004), while the Vedic period ended ca. 800-500 BCE, where-after followed the Reform Period of ca. 800-200 BCE and the period of Classical Hinduism (ca. 200 BCE-500 CE). To try to establish a direct connection between the Vedic times and tantra is therefor highly speculative and WP:UNDUE. Joshua Jonathan -Let's talk! 04:07, 18 June 2013 (UTC)
This section is being repeatedly added to the article, sourced to:
A quote from the Rigveda, and
A paper about contemporary Hindu diaspora's interaction with practitioners of other religions
to make an apparent claim about Historical Vedic culture ~3000 years back. This is pure synthesis and if a section on the topic is to be introduced it will need much better and pertinent sourcing. Abecedare (talk) 00:10, 1 November 2013 (UTC)