Barack Obama picks Joe Biden

I think it's a shrewd move for Barack Obama to pick Joe Biden as his vice-presidential running mate. Obama is unknown; Biden is known. Obama is young; Biden is old. Obama has limited foreign-policy experience; Biden has a ton. Biden will be easier to dig dirt on, parse words on, etc. This is the guy who said Obama is clean and articulate, who said you can't go into a 7-11 without hearing an Indian accent, who dropped out of the 1988 presidential running after plagiarism charges, who made Samuel Alito's wife cry because he wouldn't let up, but he's the kind of attack-dog 2nd that's good for a presidential candidate to have. Gore was the jerk when Clinton was the smoothie. Cheney was the old-schooler who told the base could relax while Bush ran his "uniter not a divider" campaign. Good move.