Hillsdale college professor Dr. Darryl G. Hart joins us to talk about J. Gresham Machen's views on race, racial issues in the church and society, his new book on the Reformation, and the implications of the Intellectual Dark Web for the world of ideas and social media...and even for the confessional Reformed. Oh, long-time presby social media maven Sean (@seansgame) sat in with us as well. Purchase Dr. Hart's latest book here. Read a piece on the Intellectual Dark web here.