It has been hypothesized that whatever intelligence is (and we obviously have not been able to fully define it so far), it is a multidimensional thing. Natural human intelligence appears to be multifaceted.
“Human-level intelligence” does not lie at the end of the road that focuses only on machine learning algorithms, nor will it be the result of the world’s greatest natural language processing machinery taken in isolation. It is somehow a combination of these things and more.