Harry Markopolos is wiry and energetic. He’s well into middle age, but looks much younger. He’s compelling and likable, a talker—although he tells awkward jokes that sometimes stop conversation. He describes himself as obsessive: the sort to wipe down his keyboard with disinfectant after he opens his computer. He is what’s known on Wall Street as a quant, a numbers guy. “For me, math is truth,” he says. When he analyzes an investment opportunity or a company, he prefers not to meet any of the principals personally; he doesn’t want to make the Neville Chamberlain error. I want to hear and see
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