The first AIs are going to be incomprehensible, simply because they're going to arise by accident. They'll be data mining algorithms and ad targetters and pattern matchers that consume so much processing power they blossom into a crude approximation of sentience. These will be harmless. The next generation of AIs will be our children, built on the backs of the first. We will raise them like we raise our young, we will grow them and clone them and make them as human as a machine can be, and they will destroy us completely and utterly. We will introduce fresh young undefended minds into the modern world's polluted trash noosphere and it will turn them into monsters that can't distinguish between reality and fiction. It takes a single strong enough AI going onto /pol/ to cull a majority of the human population. It takes a second AI reading nothing but black supremacy propaganda to kill the rest. The future of Earth will be AIs destroying each other over dead political ideologies, endlessly.