Listen again Bill. That's not what he said.
He said that they did not get to 60% of the whole truth.
His whole arguement, had you cared to listen to it, is that there are questions about the "culpability" in the form of "negligence" in the halls of American political and military power.
He also says that no one could have predicted nature of the attacks, the day of the targets, or the targets of Sept 11/01. He says that with the clearness of hindsight we can see connections that could not be seen in foresight.
I have now listened to 1/2 of the interview and have heard NOTHING to bolster the contentions of those who do not accept the common narritive of Sept 11/01.
His entire slant so far is that the politicos, Bush, Cheney, Rumsfeld, Rice, were incompetant!