Under the idea that all civilization came from the Middle East, it was assumed that Harappan culture derived its impetus from the Middle East, probably Sumeria. Recent French excavations have shown that all the antecedents of the Indus culture can found within the Indian subcontinent going back before 6500 BC as revealed by the Mehrgarh site near the Bolan Pass in Pakistan. Mehrgarh is the largest village/town culture of its period anywhere in the world and develops into the Indus culture by a series of stages, showing the evolution of agriculture and arts and crafts typical of Harappa.(*44)

In short, Western scholars are also beginning to reject the Aryan invasion or any outside oRigin for Hindu civilization:

Current archaeological data do not support the existence of an Indo-Aryan or European invasion into South Asia at any time in the pre-or protohistoric periods. Instead, it is possible to document archaeologically a series of cultural changes reflecting indigenous cultural development from prehistoric to historic periods.

The Indo-Aryan invasion as an academic concept in eighteenth and nineteenth century Europe reflected the cultural milieu of the period. Linguistic data were used to validate the concept that in turn was used to interpret archaeological and anthropological data.(*45)

The idea of the Aryan invasion was the product of linguistic speculation and archeological data was twisted into that model. Now the archeological data is shown either not to fit the theory or the date ascribed to it, while the literary evidence (the Vedas) never did. Even scholars who are still postulating a common Aryan homeland in Europe or Central Asia are making the period of diffusion from it from 4000 to 6000 BC, or early enough to allow an entry of Indo-Aryans into India before the beginning of the Harappan culture.

Colin Renfrew, places the Indo-Europeans in Greece as early as 6000 BC. He suggests such a possible early date for their entry into India as well:

As far as I can see there is nothing in the Hymns of the Rig Veda which demonstrates that the Vedic-speaking population were intrusive to the area: this comes rather from a historical assumption of the "coming of the Indo-Europeans."(*46)

When Wheeler speaks of "the Aryan invasion of the Land of the Seven Rivers, the Punjab," he has no warranty at all, so far as I can see. If one checks the dozen references in the Rig Veda to the Seven Rivers, there is nothing in them that to me implies an invasion: the land of the Seven Rivers is the land of the Rig Veda, the scene of action.(*47)

Despite Wheeler's comments, it is difficult to see what is particularly non-Aryan about the Indus Valley civilization.(*48)

Renfrew suggests that the Indus Valley civilization was in fact Indo-Aryan:

This hypothesis that early Indo-European languages were spoken in north India with Pakistan and on the Iranian plateau at the sixth millennium BC has the merit of harmonizing symmetrically with the theory for the oRigin of the Indo-European languages in Europe. It also emphasizes the continuity in the Indus Valley and adjacent areas from the early neolithic through to the floruit of the Indus Valley civilization.(*49)

In addition, it does not mean that the Rig Veda dates from the Harappan era. Harappan culture resembles that of the Yajur Veda and the Brahmanas, or the later Vedic era. If anything the Rig Veda appears to reflect the pre-Indus period in India, when the Sarasvati river was more prominent.