We no longer have a bumpy airplane ride. Instead we have a train wreck in slow motion. Well, actually, forget slow motion.That's Nathan Brown on the legal mess in Egypt, in "Train Wreck Along the Nile." I'm not going to claim he clears everything up, but he does provide a sort of guide to the various legal claims the parties to the dispute are making. Since this constitutional-crisis-without-a-constitution appears to be turning into a full employment program for Egyptian lawyers for months to come, Nathan's knowledge of legal and constitutional issues makes him a good guide.