The narrator thinks about Brian, a friend who has died and how they spent time together throwing tennis balls against the wall and Brian's theory about the tennis ball "tunneling" through space, through matter. This was a very interesting start to this 15 part serial story and it definitely made me want to read more. It personalized Brian in a way that I can tell he'll be central to some of the stories to come as well. Nice job!
A link to the story online can be found here: