@Article{pearl:14-r422,
  author = 	 "Pearl, J.",
  title = 	 "Is Scientific Knowledge Useful for Policy Analysis? 
		  A Peculiar Theorem says: No",
  journal =  "Journal of Causal Inference",
  year = 	 2014,
  volume =	 "2",
  issue =	 "1",
  pages = 	 "109--112"
}