TLDR
Product Manager must be able to do root cause analysis using an issue tree. Issue tree must follow MECE (Mutually Exclusive Collectively Exhaustive) Principle. Principle means that each item/element/variable must be no overlap. Principle usually uses by the top consulting firms such as McKinsey, Bain, BCG, etc. Product Manager will face a lot of complex problems that require deeply thinking for finding the root cause of problems such as slow development process, increase growth rate, increase retention rate, etc.via the TL;DR App
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