This week on Up Close, we often close ourselves off from information and experiences that can help us -- and ignore the opportunities right under our noses. We're also ignoring the danger that might lurk in areas we've walled-off from our concern. That's the argument of Financial Times US Managing Editor Gillian Tett, author of "The Silo Effect: The Peril of Expertise and the Promise of Breaking Down Barriers." And sometimes new experiences and new acquaintances can teach us how to be the people we'll become. That's a theme in the novel by New York Times Deputy Washington Editor Jonathan Weisman, "Number 4 Imperial Lane."