This is because ‘boy’ and ‘girl’ are genders, assortments of traits and behaviors roughly deliniated by society: They are performances of an archetype of a character.
‘Person’ is not. A person is … basically just a sentient and sapient entity.
Thus ‘good’ as a modifier, when attached to boy/girl is a claim about how good you are at essentially acting, whereas ‘good’ attached to person is much more broad, and refers to ethics more broadly.
Different categories of things tend to be judged in different ways.
This is because ‘boy’ and ‘girl’ are genders, assortments of traits and behaviors roughly deliniated by society: They are performances of an archetype of a character.
‘Person’ is not. A person is … basically just a sentient and sapient entity.
Thus ‘good’ as a modifier, when attached to boy/girl is a claim about how good you are at essentially acting, whereas ‘good’ attached to person is much more broad, and refers to ethics more broadly.
Different categories of things tend to be judged in different ways.