It seems unlikely that there's just a smart/dumb setting inside of each kid.
Material conditions being equal don't mean that everything is equal. Some people have parents who value certain things and push their kids. Other people have some anxieties to get over before they can perform. Some people like being ahead of the class and put in effort to stay there.
Material conditions being equal don't mean that everything is equal. Some people have parents who value certain things and push their kids. Other people have some anxieties to get over before they can perform. Some people like being ahead of the class and put in effort to stay there.