“The out-of-control status of the 6 Fukushima nuclear reactors and their stored spent fuel rods is a textbook example of ‘Don’t Know Squared – It’s What You Don’t Know You Don’t Know’ that can bring down any system designed by humanity.”–Michael Schlesinger, a climate scientist and engineer at the University of Illinois, Urbana-Champaign, in an item by Andrew Revkin of the New York Times.