"Speaking from the point of view of multiplicity, betweenness, and visitation, the writer can become a person in whom both individuality and community may ripen into true expression." (Hirschfield 205)
I think that this line from Hirschfield really sums up the entire piece for me. Humans are not isolated creatures, we are social animals, and as such, our art is social. The people we come into contact to during our lives influences our art just as much if not more than the things that happen to us as individuals. Writing (and of course, poetry by extension) is a method for the individual to to blossom and write about their experience as a community, or for the community of individuals within the writer to write as one.
I think that this is a method of thought that can help myself write poetry, as I tend to write my poems from my own point of view and shit everything else out. I think that those persona poems were a great primer for this kind of thought, that being, writing about or being influenced people that are not yourself.