Division by zero

I bought this book (the original title is "Stories of Your Life: And Others") a few weeks ago because I liked its name with mathematical connotations and I read on the back cover that two of the stories were awarded Nebula Award (it's like an Oscar for SciFi literature). The interesting fact is that this is the whole opera of this author so far (two awards out of eight stories is an impressive rate, isn't it?). His stories are rather some kind of parables set in a slightly different universe, but far from the standard SciFi galactic clashes between races and/or robots. There are even some notes at the end of the book explaining how the author got the idea of each particular story, sometimes that would be just a mathematical or physical principle he wanted to illustrate. Yet the reading is entertaining, especially "Stories of Your Life" which reminds me of the feeling from "Chronicle of a Death Foretold".