Mumbai, Aug. 8 -- Each time Mumbai is flooded after a hard rain, as it has been on three occasions this monsoon, there are two levels of responses. We citizens try to make the best of a bad situation with the resources available to us, relying partly on personal networks and partly on official information. Officials in the Brihanmumbai Municipal Corporation and the government offer the only explanation they can, which is that the unusual rain is a natural calamity....