Humans are unlikely to be the most efficient configuration of matter to carry out any particular task the AI wants to get done—so if the power imbalance is sufficiently large the AI will be better off wiping us out to configure the matter in a more efficient way.
Humans are unlikely to be the most efficient configuration of matter to carry out any particular task the AI wants to get done—so if the power imbalance is sufficiently large the AI will be better off wiping us out to configure the matter in a more efficient way.