That is an important point that I missed in what I read of the article before I got grossed out. Thanks. I'm still not sure about this line of research because if (when?) they do make something that achieves a level of sentience, consciousness, or even just the ability to feel, will it be able to signal to us that it is happy, content, in agony, mental anguish, etc? The thought of being trapped in that situation is terrifying.