Let's say you are Hillary Clinton (scary, I know!). You are faced with a possible plateau in support in Iowa and New Hampshire and a buzz- heavy challenger. So you decide to attack Barack Obama by saying he's a ... calculating careerist? Hmm. What's that saying about people in glass houses again? Also, don't ambition and politics go together like peanut butter and jelly? I'd say this is a fairly lame attack, senator.