A few days ago, Byron Ahn drew our attention to an excerpt from a new, six-hour audiobook, Inside Voice by Lake Bell, credited as an “actress/writer/director/producer.” Bell is a friend of author and podcaster Malcolm Gladwell, and Gladwell agreed to serve as a kind of sounding board for Bell’s ideas about something she calls “sexy baby voice,” pointing to the voices of Paris Hilton and Kim Kardashian as paradigm examples of it. Gladwell, whose