“I couldn’t figure out which of these ideas, if any, was at the core of the poem. But thinking about the grass and all the different ways you could se it made me think about all the ways I’d seen and mis-seen Margo. There was no shortage of ways to see her. I’d been focused on what had become of her, but now with my head trying to understand the multiplicity of grass and her smell from the blanket still in my throat, I realized that the most important question was who I was looking for. If “What is the grass?” has such a complicated answer, I thought, so, too, must “Who is Margo Roth Spiegelman?” Like a metaphor rendered incomprehensible by its ubiquity, there was room enough in what she had left me for endless imaginings, for an infinite set of Margos.”