Intertextuality and the Discourse Community

After reading Donald Murray’s “All Writing is Autobiographical” and James Porter’s “Intertextuality and the Discourse Community” it’s quite easy to see the similarities and differences in the twos point of views.  Murray argues that all writing is autobiographical and that each writer brings a part of themselves to the piece.  In other words meaning that we all base at least a little of our writing off our past experiences.  Porter on the other hand argues that everything is borrowed from writings that came before it.  That everything that we write has little bits and pieces from multiple other texts.  To me it seems like Murray and Porter have similar but different ideas.  What I mean by this is that Murray and Porter both believe that the writer draws on and brings up things from the past.  In Murray’s argument he says that each writer draws from past experiences.  Well isn’t reading an article part of a past experience?  So then couldn’t one argue that Porters argument could fit into the context of Murrays?   Porter’s argument on the other hand is a little harder to just go with thought because in the way he describes it were always plagiarizing everything we write.   Porter’s argument is much more rash and less up to interpretation as Murrays.   There were many things that Porter said in his article that I just don’t agree with.  For instance, he said that the writer has no free will.