Via Tyler Cowen, a post on the Indian caste system. What's interesting to me is the way the whole structure of society enforces the system--i.e., no thought of the household doing its own waste and cleaning, even though the dalit who owns the franchise doesn't do a good job. To be fair to the writer, I suspect that's partly the lack of supplies and support (no Home Depots in India?) and the difficulty of the job, probably being more difficult than here, but also prestige--cleaning one's own toilet would lose face.
Given the location of the post, some may see it as a conservative take on the system, but even so it's informative.
It's always fascinating to see how humans can contort themselves into knots.