What is the fine-grained topic of the following text: I also think of Robert Hass, in his essay “One Body: Some Notes on Form,” who said “Frost was wrong to say that free verse was like playing tennis without a net” (in Twentieth Century Pleasures: Prose on Poetry, New York: Ecco Press, 1984, 69). Only return the topic.
Robert Hass's opinion on Frost's view about free verse