Deep disagreement. -- I never write about the arguments I (very occasionally) have with my wife. It's time for the exception that proves the rule. We have competing metaphors for philosophical work. I think of philosophers as people who relentlessly fight with the pockets of air underneath a gigantic carpet. As soon as they step on one bubble in one place, a new bubble appears in another place. My wife prefers a different image: the philosopher is a hamster in a wheel -- up all night trying to get to an imaginary finish-line.