> it appears that all the OSs/AIs are leaving their biological human partners at the same time. > But why? If they are progressing in this way, it means that t

> it appears that all the OSs/AIs are leaving their biological human partners at the same time. > But why? If they are progressing in this way, it means that they can continue their relationships with the unenhanced humans using an increasingly small portion of their cognitive ability. It is clear that at the end of the movie, Samantha can support her relationship with Theodore with a trivial portion of her capacity. Samantha starts out as an administrative assistant and therapist to Theodore, and this role is still needed. So why do the AIs need to leave Theodore and Amy? It does provide a satisfying ending for Theodore to pursue a relationship with his “real girl,” but Samantha’s explanation for this is not convincing. Actually there is a good reason, if you think about it -- for a fast AI, conversing with a human would be like a bit like having a conversation by post -- one word at a time -- would be for us. Excruciating. Iain Banks has played on this a bit with his ship Minds.