To Get To The Root Of A Hard Problem, Just Ask 'Why' Five Times May 24, 2012 1 min read LinkdumpEric RiesDecision MakingMental Models To Get To The Root Of A Hard Problem, Just Ask 'Why' Five Times [https://www.fastcompany.com/1669738/to-get-to-the-root-of-a-hard-problem-just-ask-why-five-times]