When we argue about how advanced was our vedic culture, one cannot remain without acknowledging the fact that, if our teachings and advanced concepts have not been given due credit, its only ourselves who are to be blamed.For times immemorial, hindus may be the ONLY, I SAY AGAIN, ONLY culture who prevented their own people from entering schools and even villages,because they were born in lower castes. Believe me, after having travelled far and wide all over india from the north east to south west and now in north africa and having interacted with people so very different in culture, I can say this with conviction. I have seen people stay away from schools because they are poor. But not because they were supposedly born in a lower caste, of which one has absolutely no control.Generations after Generations we have been doing it, even as late as our previous generation and even today in some places in India.
This coupled with the fact that most of our scriptures are in sanskrit, a language a few understand leave aside speaking, it has played havoc in preservation of our teachings. In hindu culture, we have always believed in sharing knowledge on a need to know basis. Dronacharya didnt teach his own son what he taught arjuna. Even after teaching ekalavya, he asked for his finger as dakshina so that he cannot use what he knew so well.Parasurama, after having coming to know that karna is from a kshatriya kula, cursed him that the knowledge which was imparted to him will not work when most needed and that cost karna's life.
It is but apparent that only because of our own makings, we could not profilerate this knowledge as the christians spread their bible or the way Islam spread its teachings!!But slowly, the winds are changing and its a matter of time before we turn the worlds attention to not only our illustrious past but the happening present and a promising future.
It all started with military imperialism of the chengiz khan and alexander era, which was followed by the economic imperialism of the europeons or the present mass producing chinese but its indians who hold the key to the future when knowledge imperialism will ultimately wipe off every other form!! I hope to live to see that day!!