Some of you guys are so far gone that you don't even get the point - Edwards rarely bothers to show up. He misses a large percentage of votes, he rarely attends committee meetings and this is all from a first term senator.
There's only 100 senators, that Cheney hadn't seen him in the Senate in 4 years speaks volumes.
And if Edwards remembered meeting Cheney, he certainly could have pointed it out. He didn't. I think the evidence points to that they sat next to each other once years ago or whatever but neither remembered meeting. It's either that or Edwards is an idiot. Take your pick.