Why Focus on Principles?Principle #1: Take an Economic ViewPrinciple #2: Apply Systems ThinkingPrinciple #3: Assume Variability; Preserve OptionsPrinciple #4: Build Incrementally with Fast, Integrated Learning CyclesPrinciple #5: Base Milestones on Objective Evaluation of Working SystemsPrinciple #6: Visualize and Limit WIP, Reduce Batch Sizes, and Manage Queue LengthsPrinciple #7: Apply Cadence; Synchronize with Cross-Domain PlanningPrinciple #8: Unlock the Intrinsic Motivation of Knowledge WorkersPrinciple #9: Decentralize Decision-MakingPrinciple #10: Organize Around ValueSummary