How does the author use foreshadowing in Fable?

We might say that the mirror, in the small space it occupies in this book, only foreshadows a larger concept which Paz was to form at a later date. Surveying the cases in which the mirror is used as an image in Libertad bajo palabra, we observe that there is one common denominator which stands out above all others: the vision of the mirror as an object which suggests absence of limits, an object which by definition is not subject to the usual laws of spatial measurement. "Atrás mis uñas y mis dientes caídos en el pozo del espejo," for example, suggests the irretrievable loss.