When the hurricane hit New Orleans, and the town sank under the waves, was that a natural disaster? The Dutch prepare their dikes for the worst storm in ten thousand years. Had New Orleans followed that example, no tragedy would have occurred. It’s not that no one knew. The Flood Control Act of 1965 mandated improvements in the levee system that held back Lake Pontchartrain. The system was to be completed by 1978. Forty years later, only 60 percent of the work had been done. Willful blindness and corruption took the city down.