Fed up with philosophers’ obsession with the ontological status of various objects, real and abstract, Daniel Dennett once asked in what sense the “lost-sock center of the world” exists. (Somewhat like the center of gravity of an object.) Though the L-SC remains a thought experiment, there is, in Scottsdale, Arizona, a place where all the lost and unclaimed luggage from all of the U.S. airlines accumulates. And they sell off the stuff. If you’re the sort of person who is addicted to Ebay, you might want to hunt for bargains here.