Answer:
The disadvantage of an intertextual approach to literature is that it seems to require specialist knowledge on the part of the reader. It ignores the fact that a word or phrase can mean something to a reader, whether or not the reader knows if that word or phrase has already been used by a previous writer.
The advantage of an intertextual approach is that it focuses on the process of composition to reveal intention, while allowing for the reader's role in producing the meaning of a text. It is both reader and writer centred, encompassing the entire process by which a text comes into being and is understood.
