It is necessary because if you don't have a confirmed opinion with textual evidence to back it up you wont have a good argument.
a distinct section of a piece of writing, usually dealing with a single theme and indicated by a new line, indentation, or numbering.
Hi kween i’m sorry i don’t know the answer but have a great day
Gladwell believes students in a KIPP school succeed despite facing circumstances that would otherwise lead to failure.
Rather than failure, however, these students succeed. Gladwell argues that the culture of the school and its community -- he uses the term "cultural legacy" is what leads to success.
Gladwell argues cultural legacies are so powerful they help people defy the odds and succeed. He believes more needs to be learned about them.