Dhaka, April 16 -- There is a concept in urban sociology that Saskia Sassen developed in her landmark work on the global city -- the idea that certain metropolises become command centres of the world economy, concentrating financial, informational, and professional power in ways that simultaneously generate enormous wealth and spectacular inequality. Sassen was writing primarily about New York, London, and Tokyo: cities that were, at least in theory, built for the roles they came to play, equipped with infrastructure, governance systems, and institutional depth commensurate with their ambition. Dhaka is something categorically different. Dhaka is what happens when a city becomes a global city's data point without ever receiving a global c...