Source: http://www.muckrakerreport.com/id375.html

Bin Laden’s Confession; is that what it is?

March 15, 2007 -- The tape released by the Pentagon on December 13, 2001 in which Osama Bin Laden is seen describing the events of 9/11 to a paraplegic visitor, Khaled Al-Harbi, is as close to a confession of prior knowledge as anyone is going to get at a dinner gathering.

Bin Laden: So if the plane hits the building here [gestures with hands], the portion of the building above will collapse. That was the most we could hope for, the most we expected: that the floors above the point of entry would fall. We were at one of the canyons at the time of the event, and we knew since Thursday that it would be on Tuesday. So we had the radio on.

That is enough for me, still, there are those who doubt and might say, well, the event had already taken place and Bin Laden knew enough detail to make up a story and take credit. Yes, there are those who might say that and for various reasons.