What if conservatives' longstanding obsession with maximizing GDP growth and efficiency has actually been a catastrophic blunder? Many leftists and progressives might respond, "Well, duh." The news is that one of conservatism's big thinkers may agree. Oren Cass is a senior fellow at the Manhattan Institute, a premier conservative think tank. Before that he was the domestic policy director for Mitt Romney's 2012 presidential bid and a prolific writer on matters of politics and policy.