Lauren Caspian ranks as the third most popular host on public radio. He is a well-intentioned yet hypocritical fool, much like the rest of us. Uniquely, he is a stop-motion puppet. Every episode chronicles the production of an installment of Lauren’s program, “In the Know,” where he engages in thorough interviews with actual human guests. Lauren works alongside a varied team of NPR employees, who are also puppets and equally foolish.