Lessons to be learned about hubris and mathematically-backed ideological confidence, Wall Street's internal FOMO and ruthlessness, and just general foolishness. Diversification is misleading when all the same investors are in all the same markets. Title is unsupported in this narrative, there's little genius on display here, and suffers somewhat for being written so soon after the event. The details are clear after 50 pages, followed by a lot of blow-by-blow.