E. D. Hirsch and Stanley Fish, the contemporary American scholars, try hard to redefine interpretive boundary and validity of the text, so as to correct the biased concept of text-centrism, which held by scholars of Anglo-American New Criticism. Hirsch starts with author, what he thinks of as the only source of textual meaning is author’s intention. So he see reading as a process of reconstructing intention; Fish begins with readers, focusing on reading experience, and renewing interpretation by new terms such as interpretive communities. So he opens up a dimension of reader in contemporary interpretation. Their thoughts can be known clearly from two articles that are "In Defense of the Author" and "What Makes an Interpretation Acceptable?" Their exploration on interpretive boundary and validity provide various possibilities, and keep down overexpansion of interpretive space. But their theories are produced within the text rather than coming from entire linkage of all factors, so they just emphasize the single source of textual meaning. This led their theories into narrow-minded and biased.