Bloomberg Opinion columnist Barry Ritholtz interviews John Carreyrou, the Pulitzer-winning investigative reporter who exposed wrongdoing at the much-hyped startup Theranos. Its founder was recently charged with "massive fraud" by the SEC. Carreyrou has been awarded the George Polk Award for Financial Reporting, the Gerald Loeb Award for Distinguished Business and Financial Journalism, and the Barlett & Steele Award for Investigative Journalism. His new book is "Bad Blood: Secrets and Lies in a Silicon Valley Startup." See omnystudio.com/listener for privacy information.

Bloomberg Opinion columnist Barry Ritholtz interviews Paul Vigna, a Wall Street Journal reporter who covers the cryptocurrency sector. His most recent book, co-authored with Michael J. Casey, is "The Truth Machine: The Blockchain and the Future of Everything." He and Casey also co-authored 2015's "The Age of Cryptocurrency: How Bitcoin and the Blockchain Are Challenging the Global Economic Order." See omnystudio.com/listener for privacy information.