Author and museum curator Steve Jaffe chats with Steve McErleane and Russell Shorto about Jaffe's work on the "New York at its Core" exhibit at the Museum of the City of New York, a new installation that attempts to answer the question "What makes New York New York?" Topics include the challenges of presenting history to the public, the role of technology in museums, and how museum professionals have dealt with the death of the so-called grand narrative.