Would somebody help me here please? I'm trying to retrieve the title of a story featured on one of the EA 'casts (most likely Escape Pod); I don't remember the plot -- what I mostly remember is that the readers were probably supposed to assume the characters were typical humans, but at the end it was revealed that they were some completely different not-even-remotely-human species. Furthermore, this kind of device could only work within the written (or spoken) word; presenting it as a graphic novel or teleplay would have made the "twist" obvious.
I ask because the book I'm currently reading, Sheri S. Tepper's The Family Tree, is revealed to be doing exactly the same thing about three-quarters into the book, and that EA story came to mind when I reached the reveal in The Family Tree.