The face is a shifting, multiplex, distributed and layered phenomenon. It is by far the most mercurial feature of the human body, and even a single face cannot be isolated in, on or outside any one body. In the following discussion I will employ a variety of differing accounts of the face and suggest that the differences separating each account are merely reflective of the multiplex nature of the face itself.
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D. A. K. Black (2011) studied this question.
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