Alan Delgado de Oliveira — Writing https://delgadoliveira.github.io/writing/ Notes from practice and papers on AI evaluation, experimentation, agents, retrieval, and optimization. en-us Separating capability, causal effect, and rollout risk https://delgadoliveira.github.io/writing/evidence-stack/ https://delgadoliveira.github.io/writing/evidence-stack/ Wed, 23 Sep 2026 12:00:00 GMT Why offline evaluation, online experiments, and progressive rollout analysis answer different questions.