I really hope that the creativity is from my side :D
I see "book smart" as memory intelligence for the most part. Broader intelligence comes down to the application of what one knows to solve the problems one faces. It has to be adaptive and many people who are book smart seem not to have the creative power to adapt. Of course, there are hoses for courses and many types of people are needed as it is unlikely there are many who are truly "renaissance people"
For insane's sake, further explanation needed.
Ah! That must lack an R. Horses for courses. Never encountered that sentence before.
No need to explain, explained it myself. If my explanation is incorrect, I don't care.
typo. Horses for courses.
It means that some horses have skills on different track conditions.
I better start learning more idioms. Because without knowing them and if there's a typo and I assume something, the whole meaning probably changes to something completely different in my head.