After last week, we can probably agree that "no"--it isn't. Vatz and Bitzer were talking inside the same "box," regarding the speaker, audience, and context as discrete parts, and the post-human is part of the movement which pushes us outside that box, wanting to argue that the parts are not, in fact, discrete.

I feel like I'm missing something here. Perhaps problems do not formulate themselves in a vacuum and the problems may not be well-posed, but there is a large degree to which problems occur outside of a rhetor's influence. The President might have the responsibility to determine what problems he should try to address, but that ignores the fact that the question of what to say at the inaugural address is itself a problem that formulated long before any individual President is born. Similarly, the problems he must choose to address likely formed outside of his control, as well.

Bitzer="discovers" exigence. Vatz="created" exigence.