The question of whether an artificial general intelligence will be developed in the future--and, if so, when it might arrive--is controversial. One (very uncertain) estimate suggests 2070 might be the earliest we could expect to see such technology. Some futurists point to Moore's Law and the increasing capacity of machine learning algorithms to suggest that a more general breakthrough is just around the corner. Others suggest that extrapolating exponential improvements in hardware is unwise, and that creating narrow algorithms that can beat humans at specialized tasks brings us no closer to a "general intelligence." But evolution has produced minds like the human mind at least once.