So the modern theory that ten thousand years ago there was no human civilization, how we can adjust things? The Battle of Kurukṣetra was fought five thousand years ago. Before that, hundreds of thousands year ago there was another battle which is called fight between Rāma and Rāvaṇa. And there are so many instances in the Vedic literature. We can offer history of the world, of the universe, from millions and millions of years ago. But these people with petty knowledge for three thousand years or four thousand years, they are thinking they have advanced.
So this theory was current in those days also; otherwise why Kṛṣṇa is making reference to this theory? So all kinds of theories are existent since the beginning of this creation. But sometimes some theory is very prominent, sometimes some theory is not prominent. That's all. So this atheistic theory, that combination of matter... Just like you combine some chemicals and you get some product, similarly the modern scientist says that carbon dioxide, soda bicarb—they name so many chemicals—is the combination of this body. That is chemical analysis of this body. But can you produce? You have got all the chemicals. Can you produce even the body of an ant by combination of carbon dioxide, soda bicarb and so many chemicals? Just produce, not human being, just produce even a small ant which is moving. Combine. That you cannot. So such theories, at least we cannot accept.