“in contrast to its close relatives in Iran (Avestan, Old Persian), Vedic Sanskrit is already an Indian language”. (p 108) - Michael Witzel

“Right from the beginning, in Ṛgvedic times, elaborate steps were taken to insure the exact reproduction of the words of the ancient poets. As a result, the Ṛgveda still has the exact same wording in such distant regions as Kashmir, Kerala and Orissa, and even the long-extinct musical accents have been preserved. Vedic transmission is thus superior to that of the Hebrew or Greek Bible, or the Greek, Latin and Chinese classics. We can actually regard present-day Ṛgveda recitation as a tape recording of what was composed and recited some 3000 years ago. In addition, unlike the constantly reformulated Epics and Purāṇas, the Vedic texts contain contemporary materials. They can serve as snapshots of the political and cultural situation of the particular period and area in which they were composed. […] as they are contemporary, and faithfully preserved, these texts are equivalent to inscriptions. […] they are immediate and unchanged evidence, a sort of oral history ― and sometimes autobiography ― of the period, frequently fixed and ‘taped’ immediately after the event by poetic formulation. These aspects of the Vedas have never been sufficiently stressed […]” (WITZEL 1995a:91).

“The Indo-Aryan influence, whether due to actual settlement, acculturation, or, if one prefers, the substitution of Indo-Aryan names for local ones, was powerful enough from early on to replace local names, in spite of the well-known conservatism of river-names. This is especially surprising in the area once occupied by the Indus civilization, where one would have expected the survival of earlier names, as has been the case in Europe and the Near East. At the least, one would expect a palimpsest, as found in New England, with the name of the State of Massachussetts next to the Charles River formerly called the Massachussetts River, and such new adaptations as Stony Brook, Muddy Creek, Red River, etc. next to the adaptations of Indian names such as the Mississippi and the Missouri. The failure to preserve old hydronomes even in the Indus Valley (with a few exceptions noted above) indicates the extent of the social and political collapse experienced by the local population.” (p 107)

Apparently, Dravidian speakers began influencing the Panjab only at this moment in time. Consequently, all linguistic and cultural deliberations based on the early presence of the Drav. in the area of speakers of IA, are void or they have to be reinvestigated. ... In short, the Panjab is an area of a Pre-rigvedic, largely Para-Munda substrate that apparently overlays a still older local level. Since no traces of the supposedly Dravidian language of the Indus civilization (Parpola 1994) are visible in the early RV (see below), the people who spoke this language must either have disappeared without a trace, or, more likely, the language of the Panjab was Para-Munda already during the Indus period (2600- 1900 BCE). Therefore, the most commonly used language among the languages of the Indus people, at least of those in the Panjab, must have been Para-Munda or a western form of Austro-Asiatic.... In short, even if Drav. had been the traders' language, it remains unexplainable why Drav. influence is only seen in the middle and late RV as well as later one (AV+). The reason cannot be, as van Driem (1999, appendix p. 2, quoting agreement with Parpola) supposes, that the oldest RV hymns were still "composed in more northerly areas, perhaps as far north as modern Afghanistan." (Parpola forthc.) On the contrary, even the oldest books of the RV (4-6) contain data covering all of the Greater Panjab...