No GPS, No Algorithm, No Problem: How Mumbai's Ancient Lunch Delivery Army Is Schooling Silicon Valley
Harvard studied it. Six Sigma certified it. And yet Mumbai's dabbawala network — a 130-year-old, human-powered lunch delivery system with a near-zero error rate — still makes America's fanciest delivery apps look like they're running on dial-up. Here's why the most efficient supply chain on the planet smells like home-cooked dal and runs on pure trust.