Good enough for a short SF book. Shows that it was meant to be an even shorter story, as it says at the beginning, because it basically only follows a character, with a second added in a couple of places, and gives little detail about the world, but it does its job and sends some messages to those willing to listen. Also, all the little poems supposedly written by Mustapha placed at the beginning of each chapter can fall under "words of wisdom" anytime.