Judge Richard Posner, of the Seventh Circuit Court of Appeals, offers his criticism of the 9/11 Commission Report. The article is not short, but it is well reasoned and realistic. If you want to look beyond the 30-second flyovers of the cable news networks, or the mindless repetition and boosterism of TV's talking heads, it's worth the read. The 9/11 Report: A Dissent | 
