Ok - fair comment. So I found a copy of Superintelligence. The argument is pulp sci-fi at best: "The final phase begins when the AI has gained sufficient streng

Ok - fair comment. So I found a copy of Superintelligence. The argument is pulp sci-fi at best: "The final phase begins when the AI has gained sufficient strength to obviate the need for secrecy. The AI can now directly implement its objectives on a full scale. The overt implementation phase might start with a “strike” in which the AI eliminates the human species and any automatic systems humans have created that could offer intelligent opposition to the execution of the AI’s plans. This could be achieved through the activation of some advanced weapons system that the AI has perfected using its technology research superpower and covertly deployed in the covert preparation phase. If the weapon uses self-replicating biotechnology or nano-technology, the initial stockpile needed for global coverage could be microscopic: a single replicating entity would be enough to start the process. In order to ensure a sudden and uniform effect, the initial stock of the replicator might have been deployed or allowed to diffuse worldwide at an extremely low, undetectable con-centration. At a pre-set time, nanofactories producing nerve gas or target- seeking mosquito-like robots might then burgeon forth simultaneously from every square meter of the globe (although more effective ways of killing could probably be devised by a machine with the technology research superpower)." Look - nothing's impossible, but I agree with the counter argument that an advanced AI still starts as a "brain in a vat", with no experience of agency in the physical world. In order to successfully take over you have to assume it can develop all the physical world capability it needs, in secret and get it right first time. That seems implausible.