Wasn't it Phillis Wheatley's "Poems on Various Subjects, Religious, and Moral"?
Answer:
the boys are mannered throwing the trash
Dialogue can show the reader how the character thinks, interacts with others, communicates, and possibly even where the character is from and/or their educational level.
A biography can contain almost anything about a person- Their entire life, or just one key event... Most biographies, regardless of their length and target audience, will provide basic facts like the time and place in which the person lived.
Answer:
It can't be learned very easily or quickly.
