‘People wanted to believe’: reporter who exposed Theranos on Elizabeth Holmes’ trial

As blood testing startup founder's fraud trial looms, John Carreyrou says hero worship is still a problem in Silicon Valley

The unraveling of Theranos began with a 2015 article in the Wall Street Journal that revealed how the revolutionary technology promoted by the blood testing startup wasn't exactly what it seemed.

Over the proceeding months, the reporter John Carreyrou exposed how the testing devices the Silicon Valley darling said could perform a variety of medical tests with just a drop of blood were not actually being used to perform most of the analyses. Investors and consumers, Carreyrou found, were being fooled.