Sometimes that&#x27;s true. If you have a team of people doing approximately the same thing then knowing which one of them broken something has little value. You just need a process to stop things braking again in the future. But in the case of a disparate group of people who all do different things, you need to know who caused the problem in order to know how to fix it - the &quot;who&quot; and the &quot;what&quot; are the essentially same question.<p>In the case of Theranos the problem of &quot;what went wrong?&quot; and &quot;who fucked up?&quot; are effectively the same - either the investors didn&#x27;t do proper due diligence or the founders misled them. You can&#x27;t fix the problem without knowing the cause. It doesn&#x27;t really matter whether you couch it in terms of &quot;what&quot; or &quot;who&quot;; knowing one automatically informs you of the other.