1.manuscripts and hieroglyphs are not written by only bramhins or only one cast as a matter fact, on contrary to your presumption, they are the testimony of the civilization of that period including  many ethnic civilization.

2. Where did you see I am denouncing presence of other ethnic group, as a matter of fact, there were many tribes and ethinic people and geographic regions were the part of these " i would rather refer eastern civilization".

3.And I do not have anything against western scholars, but in general they are the one who exploited/twisted ideology.  I wish you had read more. Read some contemporary piece like " western idea on destruction of local knowlege". Well, it seems you are jumping on conclusion based on one web site, as for me like you think, this is not as easy, as you try to portray.

4. again where i denounce the use of science rather if you read my post, i gave you an example of very recent genetic test.

5. As for your argument on " Native" -well if you read history, those days there are nothing like "native" rather many were "nomadic"-people used to move/trade one place from the other in a serch for food and shelter.

6. As for your pointing cast division toward " rig veda"
"The Bahun was born from the mouth, the Chetri from the arms, the Vaishya from the thighs and the Sudhra from the foot". So how can one believe this doctrine??
Those were the different period and social order was different, today you are view those doctrine with neo-democratic eyes which is not the correct way. FYI, even today this social system exists, but differently. I guess you are intelligent enough to understand.