Kids at 9 are absolutely not able to choose what career they will actually want to do when they are old enough to work. They just don't know enough of the world to make this choice.
What they have to do at this age is discover as much of the world as possible in order to be able to make a better choice later on.
It always puzzled me that the same kids who are expected to think that far and be able to take "career" decisions are not allowed to watch any movie they want or drink alcohol. There's a bit of a dissonance there.
What they have to do at this age is discover as much of the world as possible in order to be able to make a better choice later on.