Seems to me it ain't necessarily so. Before this particular National Poetry Month is over The Inquirer will have reviewed Derek Walcott, Eavan Boland, W.S. Di Piero and Nikki Giovanni. In recent weeks or months we have reviewed Zbigniew Herbert, Frieda Hughes, Paul Muldoon, Karl Kirchwey and ... Charles Bernstein. You honor the month as you honor the month. No obligation to stick to Billy Collins (who I am not, by the way, disparaging because he is accessible).