One must beware of falling into a kind of uncritical Indological McCarthyism towards those open to reconsidering the established contours of ancient … - Edwin Bryant

Many of die foreign terms for flora and fauna could simply indicate that these items have continually been imported into the subcontinent over the centuries, as continues to be the case today. The exception to this is place-names and river names, but the absence of foreign terms for the topography and hydronomy of the Northwest deprives us of significant evidence that has been used to establish substrata elsewhere.

I trust I may be forgiven for not coming to a clear conclusion myself. Until the script is deciphered, the presently available data are not sufficient to resolve the issue in my mind. The Indo-European languages came from somewhere between the Caspian Sea area (and the Balkans) and northwest South Asia. I do not feel impelled to favor any particular area in this vast expanse: all homeland proposals (not least of all South Asian ones) have significant problems, as I have attempted to outline throughout this work. The Indigenous Aryan critique has certainly influenced my own agnosticism.

There is ample evidence of foreign personages and tribes in the Vedic period. Kuiper lists some twenty-six names of Vedic individuals who have non-Indo-Aryan names, with which Mayrhofer concurs. Witzel points out that twenty-two out of fifty Rgvedic tribal names are not Indo-Aryan, with a majority of them occurring in later books.