Cathy O'Neil, data scientist and blogger at mathbabe.org, talks with EconTalk host Russ Roberts about her journey from Wall Street to Occupy Wall Street. She talks about her experiences on Wall Street that ultimately led her to join the Occupy Wall Street movement. Along the way, the conversation includes a look at the reliability of financial modeling, the role financial models played in the crisis, and the potential for shame to limit dishonest behavior in the financial sector and elsewhere.