As a fan of Star Trek I have often seen gadgets even from the earliest shows have in some guise come to fruition. Tablets and digital cameras being a couple. There have been instances in most series where computers or machines have enabled the ability to improve themselves and build defences from experiences or threats and this is the fear of what could happen in reality. There is talk you could pull the plug but how many times can you do that before the technology builds a defence to it.
The more I know the less I understand.