Principlev1
Allocate optimization effort to reducing serial bottlenecks
Allocate optimization effort to reducing serial bottlenecks rather than accelerating already-parallel work, because the serial fraction determines the maximum possible speedup regardless of parallelization efforts (Amdahl's Law applied to cognition).
Why This Is a Principle
Grounded in The behavior of a system arises from its structure, not from (system behavior from structure), Average cycle time equals work-in-progress divided by (cycle time equals WIP/throughput), and Different problem domains require fundamentally different (different domains require different approaches). The principle prescribes focusing on serial constraints as leverage points. Actionable as an optimization strategy.