How do I know for sure that my world is not also a sophisticated charade, put forward by some super-human intelligence in such a way that I cannot possibly detect the ruse?
It basically lists the tasks it calls "human intelligence tasks" i.e the tasks that require human intelligence and cannot be easily accomplished by a computer (or a software).
Only new situations which your intellect cannot cope with, only such spaces which your knowledge has not heard about, can help to bring your intelligence to the surface.
My English teacher is sunshine boy, he looks like as old as us. Though he wears a pair of glasses, but cannot conceal his eyes that are full of intelligence.