"The Man Who Solved the Market" is filled with other fascinating characters, perhaps none more consequential -- to both Renaissance and the nation -- than former Chief Executive Officer Robert Mercer. It is a far more nuanced portrait of the conservative influencer than the ones usually found in the popular press. Mercer is a preternaturally calm and measured scientist, brilliantly rigorous and evidence-based in all things market-related. Yet outside of mathematics, he believes the wildest unfounded conspiracy theories, and buys into all manner of debunked nonsense. It is as if Mercer is an extreme version of everyone’s best and worst selves -- a brilliant and rational professional, but driven by biases and seething emotions in his political life.