I agree on those points, and should have been more specific on who “they” are. The people who could have facilitated the choice to begin movement away from the city rather than reinforce more flooding protection and rebuilding where they knew eventually there would be more losses in greater amounts. Yes, people come back, don’t leave, or new people show up for the opportunities that the vacancies give. Just like in any disaster area. It’s not just Katrina officials, it’s the same in any places with hurricanes. New Orleans just has the added danger of sinking added to the list. The mistake was Katrina gave a unique window to maybe investigate a new reaction instead of just recovery. Maybe that’s simply too large a scale of people, infrastructure, and time for us to be able to do. New Orleans isn’t the only large city that will eventually move, either by choice, stages, or forced by disaster. Looking at you, Miami.