And if it chooses the wrong prior topic (among several possibilities) the smartbot could behave maddeningly obtusely. I suspect even the best of these today wi

And if it chooses the wrong prior topic (among several possibilities) the smartbot could behave maddeningly obtusely. I suspect even the best of these today will have little idea what part of the conversation is more relevant to the human's focus than any other part. It's just as likely to turn its attention to an irrelevant 'token' that came before as a relevant one and say something obvious or fatuous. It's a lot easier to converse gracefully than to add useful info to a conversation. This is essentially what has made past intelligent assistants so dysfunctional (like Microsoft's Clippy). They couldn't model cognitive concepts like 'relevant', 'interesting', or 'necessary' relative to the active topic.