CIA said they told Nancy Pelosi about waterboarding. Pelosi says they didn't. But here's the kicker! Bob Graham, who was head of the Senate Intelligence committee, said the CIA didn't inform him about waterboarding either. Not only that, he went back to check dates of claimed CIA briefings when it turned out no briefings took place.
How does he know this? Bob Graham writes down everything in his notebook. And I mean everything. What times he wakes up. When he puts on his scalp medication. When he eats. What he eats. Every damn day.