Can somebody please tell what literary theory was used in the poem "What poetry does not say"

Question

Can somebody please tell what literary theory was used in the poem "What poetry does not say"

Answer 1

Literary theory isn't "used" to write a poem per se; it is used to decipher it.  So you can look at a poem from an artistic standpoint, a historical standpoint, a psychological standpoint, etc.  It can be as much of a hindrance as it can a useful tool.