The STUPID would be President George W. Bush and the neocons in his administration who it is now revealed didn't just ignore the infamous August 6, 2001 presidential daily briefing entitled “Bin Laden Determined to Strike in U.S,” but also numerous direct warnings about a planned Al Qaeda attack that began in the spring of 2001. There were multiple warnings that were given to the Bush Administration in May 2001, June 2001, and July 2001. All ignored. Via The New York Times:
Yet, the White House failed to take significant action. Officials at the Counterterrorism Center of the C.I.A. grew apoplectic. On July 9, at a meeting of the counterterrorism group, one official suggested that the staff put in for a transfer so that somebody else would be responsible when the attack took place, two people who were there told me in interviews. The suggestion was batted down, they said, because there would be no time to train anyone else.In both cases, perhaps "stupid" is not the right word. Willful ignorance because the facts at hand do not fit their preconceived beliefs is more like it.