Why Simulation NowUnderstanding Complex Business SystemsSupply Chain Bullwhip EffectCapacity Planning: Averages Are Not EnoughCompetitive Market DynamicsThe Limits of Traditional AnalyticsDependence on Historical Patterns and the Problem of Novel SituationsUnderstanding Correlation but Not CausationStatic Snapshots to Describe Dynamic SystemsFocusing on Central Tendency Without Enough Attention to ExtremesNot Understanding Delays and Latency in System DynamicsSystems Thinking: A Framework for Complex SystemsStocks and FlowsFeedback LoopsDelays and AccumulationsEmergent PropertiesWhat-If ScenariosCase Study: Predicting Financial Contagion in Banking NetworksThe ResultsComparison of Modeling ApproachesSummary