Bloomberg View columnist Barry Ritholtz interviews the fascinating Victor Niederhoffer, a nationally ranked squash champion and former Berkeley professor of finance and statistics. An undeniably brilliant man who was still unable to adequately manage risk, he offers crucial lessons for all traders. In his first book, "The Education of a Speculator," he reveals the risk-embracing style that created his first fortune. In his follow-up, "Practical Speculation," he almost -- but doesn’t quite -- accept responsibility for the prior disaster. It was published before the devastating second set of losses suffered during the credit crisis.