On this edition of our show, we speak with the Bay Area-based writer Robin Sloan, whose smart, tech-savvy, entertaining, and decidedly adventure-driven debut novel, "Mr. Penumbra's 24-Hour Bookstore," has been drawing some rave reviews. As critic Janet Maslin has noted in The New York Times, this book is a "slyly arch novel about technology and its discontents.... The culture clash at work here --- Google aces wielding the full, computer-assisted strength of their collective brainpower, one scholar fiddling with a quaint astrolabe --- has a topicality that works to this novel's advantage.