Actually, Edsger W Dijkstra advocated this stuff for many years. Almost all of his writings are collected on his home page at the University of Texas, http://w

Actually, Edsger W Dijkstra advocated this stuff for many years. Almost all of his writings are collected on his home page at the University of Texas, http://www.cs.utexas.edu/users/EWD/ http://www.cs.utexas.edu/users/EWD/ . There have been some advances since, but as the Schneier article shows, not much that is very useful yet.