Especially in urban areas, nobody cares so much [about castes], because you are forced to live in the same buildings. There is so, so little space. You can't be thinking about whether you are living in a street that has only Brahmins, or in a building that has been touched only by Muslims or Christians. You just live there, because that's the only place that you can find. So such distinctions just crumble away. There are people who maintain them, at all costs. But for the most part, it doesn't matter.