Fast experiments can move metrics—and sometimes erode trust. In this 15‑minute panel Gustavo (measurement) and Michelle (brand) translate high‑level ethics into three operational rules you can apply in a 72‑hour pilot. We start with a tight micro‑case where a well‑intentioned urgency test backfired, then show concrete moves: transparent consent and micro‑disclosures that keep tests honest without wrecking lift; emotional-safety filters so headlines and interventions never exploit fear or scarcity; and fairness checks to avoid excluding or biasing vulnerable segments. Gustavo maps light instrumentation patterns (labelled experiment cohorts, ephemeral flags, rapid rollback triggers) so measurement stays clean while Michelle provides copy templates and a two‑step brand QA to keep tone safe. Listeners leave with a one‑page Ethical Experiment Checklist, a 72‑hour runbook, and a subscribe CTA to get the asset pack—so teams learn fast without sacrificing long‑term trust.