On the contrary, the ancient Indians had a thriving civilization. You even allude to this later in your post when you say that there is some evidence that India was the home of one of the first supercultures. But all civilization decline at some point. I think there is plenty of evidence that the British civilization that overran India is now in decline, and India is rising once again.
The Hindus invented the numbers we use. They invented the concept of zero as we use it in our numbers today. When Fibonacci introduced these numbers into Italy in the 12th century, he was met with tremendous resistance. People did not want anything to do with these pagan symbols. Europeans were particularly resistance to the concept of zero. They were afraid of this pagan concept. Cities in Italy passed laws forbidding people to use the new numbers.
It took 300 years before there was wide acceptance of the Hindu-Arabic numbers we use today. Looking back the superstitions against these numbers look ridiculous. And I think a hundred years from now people will look back on the fear that people have today about yoga and laugh.
The greeks saw mathematics as a gate way to the Gods, so did the Hindu’s, so do some of the psychiatric clients I’ve worked with over the years. Just goes to show that Numerology goes back as far as the Fall of Man itself.
Numbers and math are tools, great tools, indeed a direct blessing from God so that man in exploring the universe can ferret out the great truths of God, so that we “are without excuse” when we all stand before God! Math lets us build houses and bridges, make medicines and fly to the stars. God blessed man with math so that he could come out of caves and allow us some measure of control over our chaotic enviroments. David admonishes us to “number our days”, John encourages those with wisdom to “calculate the number of the beast”. God gave us math to warn of us of coming dangers and to understand the logarithmic scales of the results of the preaching of the Word(planting of the mustard seed which produces ten fold and hundred fold).
Indeed, in the era before Christ, God did indeed “wink” at the greek and hindu and Chinese wise men, the Zoroastrians and others who were desparate to find God, and God in his mercy and love for the world gave the world mathematics thru them! But remember, the wise men of the east came to Jesus to pay him homage recognizing God in flesh, the source of all their wisdom! Jesus would never go to them for wisdom, for he was the source of all wisdom from the founding of the world!