Ray Dalio of Bridgewater Associates spoke yesterday at Dealbook conference in New York. Dalio who runs the world’s largest hedge fund, expressed growing concern over the US economy in 2013. Ray Dalio is concerned that austerity measures, the diminishing returns from QE and a possible rate rise could cause the economy to stall. Also in this video, Steve Schwarzman and David Rubinstein. The full video is embedded below. Big H/T Value Investing World dealbook on livestream.com. Broadcast Live Free…