In Flash Boys, Michael Lewis alleged that the entire U.S. stock market is rigged. This is an extraordinarily serious accusation. If it is true that a conspiracy of stock exchanges, banks, regulators and high-frequency traders has rigged the market, this has profound implications for every aspect of our financial system. It's rather surprising, then, that this book alleging a vast high-frequency trading conspiracy included no high-frequency traders. Flash Boys lacks a single insider's account, and it shows. Electronic trading is extremely complicated, and if you neglect to talk to any...