Q: Do you think that Colin stayed a genius when he was older?
I can’t imagine the story outside the text of the story. Like, I can’t see further into the future and know if he and Lindsey get married, or if Hassan graduates from college, or if Colin ever becomes a genius.
All that stuff is for you to imagine, if you wish to.
There are many child prodigies who grow up to lead very ordinary lives; there are others who are paralyzed by their prodigious childhoods and never find their way in adulthood. And then there are prodigies like Norbert Weiner, who enjoy exceptionally productive adulthoods and get rooms at MIT named after them.
But I think by the end of the novel, Colin is measuring success a little differently than just seeking genius.