(EE) Be Careful with the Precautionary Principle!

Here is a short article by Cass Sunstein, professor of jurisprudence at the University of Chicago. Although I don't endorse everything he says here, he gives a useful overview of the conceptual difficulties the PP presents. http://object.cato.org/sites/cato.org/files/serials/files/regulation/2002/12/v25n4-9.pdf