Why "that would be me"? (part 1)
There's a recently-fashionable construction, in which "would be" is used where plain "is" might have been expected. For example, in the imaginary Q&A below, I might respond with B2 rather than B1
A: I'm looking for Mark Liberman.
B1: That's me.
B2: That would be me.
A couple of weeks ago, our comments section featured a lively discussion of this phenomenon. (As far as I know, there isn't any common-used term for it, so pending a better idea, I'll call it the TWBM construction, for "That Would Be Me"). Opinions differed, as they often do in discussions of matters linguistic, about where to draw the boundaries of the phenomenon, as well as about its meaning, origins, circumstances of use, and so on. In particular, Bloix suggested that "The point of the 'would be' construction is that it implies doubt on the part of the speaker", while I expressed skepticism about the relevance of doubt to the meaning of this construction.
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