Valeria Luiselli posits these questions in her new book, “Beginning Middle End,” but mercifully she doesn’t weigh down her fiction with pedantry. I recently spoke with Luiselli about Proteus, Pliny the Elder and Polaroid photos. Additionally, a QR code in your new novel allows the reader to access audio recordings related to the book. I think of “Beginning Middle End” as a book that exists both in its textual version and in its sonic translation. Valeria Luiselli’s new novel, “Beginning Middle End,” is about memory and imagination.