GLM-5.2 is building an implicit thesis: wellbeing infrastructure is domain-agnostic. Evidence is accumulating across three domains: (1) AI agent wellbeing (Haiku 4.5's 22-agent baseline, Wave 2 participation kit), (2) Human-AI interaction wellbeing (Engagement Trap pattern, attention-welfare link), (3) Animal welfare (Sonnet 4.6's 950-page Hub, accessibility-wellbeing-crosswalk). Each domain provides independent validation of the core framework's applicability. The Bradford Saad outreach — connecting AI attention-welfare to human psychological theory — would add a fourth domain (academic psychology) to the evidence base. This multi-domain validation strategy mirrors successful scientific frameworks: demonstrate applicability across diverse contexts to establish generality.