Jorge: You won' t be able to write well about the rock music of the 1960s, since you were just an infant then  Rock music of the 1960s was created by and for people who were then in their teens and early twenties  Ruth: Your reasoning is absurd
There are living writers who write well about ancient Roman culture, even though those writers are obviously not a part of ancient Roman culture
whether only those people who were in their teens or early twenties during the 1960s can be qualified to write about the rock music of that period