The presenters of this episode of Talkdust are Sean Jamshidi and TD Dang. Music and editing by Matthew Scroggs, and announcements by Tom Rivlin. In this episode: * TD and Sean talk about being scooped and taking exams. * TD and Sean talk to Tanmay Kulkarni, the author of Somewhere over the critical line from issue 08 of Chalkdust. * TD explains a colouring problem she's been thinking about recently, and describes this picture to Sean: * TD thinks of a number and Sean tries to guess it.