Hawksworth remembered that Mukarrab Khan had once described the caste system of the Hindus with obvious Muslim disgust. There are four castes, he had explained, each striving to exploit those below. The greatest exploiters called themselves Brahmin, probably Aryan invaders who had arrived thousands of years past and now proclaimed themselves "preservers of tradition." That tradition, which they invented, was mainly subjugation of all the others. Next came the Kshatriya, the warrior caste, which had been claimed by Rajput tribes who also had invaded India, probably well after the Brahmins. The third caste, also "high," was called Vaisya, and was supposed to be made up of society's producers of foods and goods. Now it was the caste claimed by rich, grasping Hindu merchants. Below all these were the Sudra, who were in effect the servants and laborers for the powerful "high" castes. But even the Sudra had someone to exploit, for beneath them were the Untouchables, those unfortunates in whose veins probably ran the blood of the original inhabitants of India. The Untouchables had no caste. The part that annoyed Mukarrab Khan the most was that high-caste Hindus regarded all Muslims as part of the mass of Untouchables. "The four main castes are those prescribed in the order of the _varna_, the ancient Aryan scriptures. But the world of the village has little to do with the _varna_. Today there are many castes," Vasant Rao continued, reflecting to himself how he loathed most Brahmins, who took every opportunity to claim caste superiority over Rajputs. "For example, the Brahmins here probably have two subcastes--one for the priests, who think up ceremonies as an excuse to collect money, and the other for the landowners, most of whom are also moneylenders. "There"-- he pointed--"that man is a Brahmin." Hawksworth saw a shirtless man standing by one of the white plaster homes. He wore a dingy loincloth beneath his enormous belly, and as Hawksworth examined him he noticed a strand of thread that circled around his neck and under his left arm. "Why is he wearing a cord around his shoulder?" "That's the sacred thread of the high castes. I wear one myself." Vasant Rao opened his shirt to reveal a strand of three colored threads, woven together. "It's consecrated and given to boys around age ten at a very important ceremony. Before the thread ceremony a boy has no caste. An orthodox Brahmin won't even eat with his son until after the boy's thread ceremony." Hawksworth examined the thread. It was the first time he'd noticed it. "What about the men who don't wear a thread?"