FWIW, Josef Oehman has posted some explanation on the original blog post: http://morgsatlarge.wordpress.com/2011/03/13/why-i-am-not-worried-about-japans-nuclear

FWIW, Josef Oehman has posted some explanation on the original blog post: http://morgsatlarge.wordpress.com/2011/03/13/why-i-am-not-worried-about-japans-nuclear-reactors/ http://morgsatlarge.wordpress.com/2011/03/13/why-i-am-not-wo... I think the primary problems here are insufficient concrete information, and also masses of confirmation bias in both directions (leading people to essentially find whatever they want to find in a mass of conflicting information.) At least the information should become increasingly clear over the next month or two, which should cut down somewhat on the second problem.