Do you think it is really still just a theory, or is it possible there's one, in existence, somewhere? Who knows, maybe it's Trump?
Asimov remained vague about the technical details of positronic brains... Why? Did he remain vague to save face since he posited all he knew, or, did he maintain secrets because he was working with the government and it was all classified beyond the basics in his publications?
What evidence is there to suggest there is more to thoughts?