They were not gulled, not duped, not taken in. They were pointedly warned by at least 2 of their own document experts that these memos were highly questionable. CBS knew very well that they were perpetrating fraud on their viewers. When Rather first reported on the memos, he said CBS had "thoroughly investigated" and cited the document experts to buttress his claims. He lied and that's obvious.
Nobody at CBS was deceived, hoaxed, tricked, duped, gulled, spoofed, hoodwinked, hornswoggled, flimflamed, diddled or suckered.
CBS tried to pull a fast one and got caught. Period.
CBS tried to pull a fast one and got caught. Period.
The memos are obviously fraudulent. Dan Rather isn't so stupid as to knowingly -- oh, wait, I see your point.