Ray Dalio, the founder of the world’s biggest hedge fund, spends a lot of time contemplating what he deems the China “riddle.”  “How is it that a communist country can be so capitalist that they have the second largest capital market in the world, produce billionaires, and simultaneously be Marxist?” he asks from his Connecticut home, where The Wire reached him by Zoom. “If you don’t know how to answer that riddle, then you must not understand China.”  Dalio, 72,