People have short-term memories

With National Treasures At Risk, D.C. Fights Against Flooding
December 20, 2013
http://www.npr.org/2013/12/26/255847303/with-national-treasures-at-risk-d-c-fights-against-flooding

The nation’s capital is not exactly a beach town. But the cherry-tree-lined Tidal Basin, fed by the Potomac River, laps at the steps of the Jefferson Memorial. And, especially since Superstorm Sandy, officials in Washington have a clear idea of what would happen in a worst-case storm scenario.

People have short-term memories,” she says. “They see the cars are running; they can go to work. The office buildings are back. So it’s hard to convince people that there’s actually a threat.”

related:
https://franzcalvo.wordpress.com/2013/12/27/the-optimism-bias