Metaphor and theory change: What is “metaphor” a metaphor for?

In the now classic essay "Metaphor" (Black, 1962b), Max Black considers and rejects various formulations of the "substitution view" of metaphor, according to which every metaphorical statement is equivalent to a (perhaps more awkward, or less decorative) literal statement. Black devotes most of his critical attention to a special case of the substitution view, the "comparison view," according to which a metaphor consists in the presentation of an underlying analogy or similarity. It is clear from Black's discussion that he understands the comparison view as entailing that every metaphorical statement be equivalent to one in which some quite definite respect of similarity or analogy is presented, and that successful communication via metaphor involves the hearer understanding the same respect(s) of similarity or analogy as the speaker.