There is an interesting paper on the cost and effectiveness of the measures undertaken by the US
Department of Homeland Security by John Mueller, a political scientist at Ohio State, and Mark
Stewart, a civil engineer at the Uni Newcastle, NSW. A link, as well as some discussion about
"possibilistic" thinking, is at
http://www.abnormaldistribution.org/2011/05/13/probabilistic-and-possibilistic-analysis-the-precautionary-principle-and-eues/
PBL
Peter Bernard Ladkin, Professor of Computer Networks and Distributed Systems,
Faculty of Technology, University of Bielefeld, 33594 Bielefeld, Germany
Tel+msg +49 (0)521 880 7319 www.rvs.uni-bielefeld.de
Received on Fri 13 May 2011 - 12:03:38 BST