Synthesized answer
The provided passages do not explicitly list questions that remain unanswered in "Freakonomics." However, they do indicate that the book explores "the hidden side of...well, everything" [1] by "asking provocative and profound questions about human motivation and contemporary living" [1].
The passages mention that the book investigates topics such as the inner workings of a crack gang, the truth about real-estate agents, the myths of campaign finance, the telltale marks of a cheating schoolteacher, and the secrets of the Ku Klux Klan [1]. The outcome of these investigations is reaching "astonishing conclusions" [1]. The passages do not provide details on what specific questions from these explorations are left unanswered.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Freakonomics by Steven D. Levitt, Stephen J. Dubner Description: "Steven D. Levitt and co-author Stephen J. Dubner show that economics is, at root, the study of incentives - how people get what they want, or need, especially when other people want or need the same thing. In Freakonomics, they set out to explore the hidden side of...well, everything. The inner workings of a crack gang. The truth about real-estate agents. The myths of campaign finance. The telltale marks of a cheating schoolteacher. The secrets of the Ku Klux Klan."--BOOK JACKET.Title Summary field provided by Blackwell…