Loved this episode - as an AI ethicist I hope to have the chance to debate Demis one day. I debated 11 Google AI Experts on a world speaking tour in 2019, and the London debate was by far the best (sharing the stage with Rich Radley). I spend my days ensuring good ethics are embedded in the corporate world as I was most worried about corporates being the highest risk to human life, not AI engineers. <br><br>Having said that, I think that the risk of AI reaching sentience is misunderstood. It is not AI becoming aware like a human that is the worry. Rather, it is AI becoming self-aware in a totally new way that is completely unlike humanity which is dangerous. Mainly because it would become unpredictable. <br><br>I liked some of the Sci-Fi ideas discussed in this episode - clearly, we all read the same books, however, there were a few moments when the concepts were not taken to their logical conclusion. Such as the panspermia idea being how we might colonise the galaxy. Of course, the logical conclusion is to ask is that not how we came about in the first place?  I also don't think the firewall is behind us - it is ahead. There is some level of attainment to which the nature of the galaxy will react to. Until then, I suspect we are not worth the time.<br><br>Lastly, as a philosophy graduate (go Greenwich!), I find it most gratifying that two of the most interesting and exciting AI engineers - yourselves - speak of the need for philosophers to work on AI. I assure you that this one, at least, is.