How do you know what things you don't want to know?

Think Progress has a post by a counsel to the 9/11 commission. In it he points to an episode in Woodward's new book:

about a special surprise visit that George Tenet and his counterterrorism chief Cofer Black made to Condi Rice, also on July 10, 2001:

They went over top-secret intelligence pointing to an impending attack and “sounded the loudest warning” to the White House of a likely attack on the U.S. by Bin Laden.

Woodward writes that Rice was polite, but, “They felt the brushoff.”

The 9/11 commission was not informed about this meeting, or at least it didn't show up in the report.

According to Woodward’s book, Cofer Black exonerates them all this way: “Though the investigators had access to all the paperwork about the meeting, Black felt there were things the commissions wanted to know about and things they didn’t want to know about.”

So the 9/11 commission wanted to know only certain things, and they didn't want to know others. Doesn't that make the whole thing a joke? Ha ha.
BTW, Cofer Black, like George Tenet, has gone on to finer things. He's now a vice-president at Blackwater.