Bernard Madoff still has some magic. The public finds anything connected to the fraudster’s case fascinating, from a prison interview to JPMorgan’s agreement last week to pay $2.3-billion (U.S.) for Madoff-related sins. And why not? Mr. Madoff was a grandmaster of the confidence trick. But there is more to it than that. His way of doing business was alarmingly close to the perfectly legal practices which brought down the financial system in 2008.