ML lead vs PM on eval-methodology layer independence. who's actually right here? [D]

Got into an argument with our ML lead at 11pm yesterday about an eval methodology a PM had built off a framework she learned at an AI PM cohort. shes claiming a layered defense framework, hes saying the layers are statistically conditioned and her independence claim is wrong. they both have a point. the framework as taught at the cohort (it was Product Faculty's, fwiw) is genuinely useful for non-eng PMs. it forces explicit thinking about behavioral checks vs adversarial probes vs traditional metrics.