Product Judgment
Who it's for, the job it does, what "good enough" means, when to kill it.
UX/UI & Interaction
User flows, the states users actually see, accessibility.
System Design
Architecture, the big choices (ADRs), failure recovery, scale, versioning.
Economics
Cost-per-use, model and caching trade-offs, the operating point.
Reliability & Ownership
Edge cases, testing, idempotency, deployed and observable.
Evaluation
Golden datasets, validated judges, regression gates, failure-mode analysis.
Safety
Trust boundaries, guardrails, least-privilege tools, red-teaming.
Communication
Turning a vague goal into scope, and explaining it to a non-expert.
Collaboration & Stakeholders
Design, data, GTM, legal, support and eng leadership: aligned, signed off.