TOM ENGELHARDT: Excerpt: “…had they not been so blinded by triumphalism, Bush’s people really wouldn’t have needed to know much to avoid catastrophe. This wasn’t atomic science or brain surgery. They needn’t have been experts on Central Asia, or mastered Pashto or Dari, or recalled the history of the anti-Soviet War that had ended barely a decade earlier, or even read the prophetic November 2001 essay in Foreign Affairs magazine, “Afghanistan: Graveyard of Empires,” by former CIA station chief in Pakistan Milton Bearden, which concluded: “The United States must proceed with caution — or end up on the ash heap of Afghan history.”