Vendler's interpretation of this section cites, simply, "The correspondence theory of truth"(14).
For the twelfth section, McNamara discusses the idea of "the river" as a symbol for time, "in the philosophical sense of constant flux or change of state in existential reality." From this passing of time, the second line of section twelve is interpreted as life, too, passing and escaping the "unheeding man" (McNamara, 448).
Lewis feels that one may read the twelfth section of the poem "as a super-position of two unrelated statements - as an attempt, possibly, to depict two different times and places at once and in the same place." Although the two events mentioned in the section are completely unrelated, Stevens seems to be implying that since "the river is moving" then "the blackbird must be flying" (Lewis, 81).