AH!!!! You forget, Holder put his weasel word in there. He said a 'few' weeks ago. What is the definition of a 'few'. Lawyers can have a field day with that (definition of 'is').
I am not defending him, just telling ya how he'll cover his ass.
Holder quotes:
"I'm not sure of the exact date, but I probably heard about Fast and Furious for the first time over the last few weeks."
"My testimony was truthful and accurate. ... I have no recollection of knowing about Fast and Furious or of hearing its name prior to the public controversy about it. Prior to early 2011, I certainly never knew about the tactics employed in the operation."
His "is" words, "probably", "few", "no recollection", plus his denial of knowing the "tactics employed in the operation." All statements carefully worded to give plausable deniability, especially if you are part of the regime of liberalism.