Colin Marshall talks to Robin Hanson, professor of economics at George Mason University, research associate at Oxford’s Future of Humanity Institute and chief scientist at Consensus Point. He’s also the thinker behind Overcoming Bias, a popular blog about issues of honesty, signaling, disagreement, forecasting and the far future, around which a large rationality-centric community has developed on the internet. “Flicking through Robin’s thoughts,” says the Observer, “you start to feel the ground shifting beneath you.”