I didn't like this story.
The echo-y quality of the reading was disturbing until I got used to it, and in places, the reader was halting, as if he'd recorded, re-recorded, and spliced, without looking at continuity of the recording itself. He acted Liona well, though.
The story itself, I think, had a very misleading title. I expected something like "The Train Job" (Firefly episode) meets "AI" or "Bicentennial Man". I also found the description of the story by Steve (in the intro) a little misleading too.
As for the story itself... I agree with some who wondered about the Christian names, though I disagree about the racist angle; the fact that the main characters were white didn't necessarily mean that only white people could do what David and Liona were doing, IMO. I also agree with the idea that the laptops were solving the problems for the Zambians, although the story did say the kids were running simulations, so I get the feeling that, had it been a novella, we might have seen the kids using the BIKOs to learn how to do the simulations. As a short-story, the amount of tech that could be given to the reader while still remaining "short" was limited. I also agree that there wasn't nearly enough overt conflict, although the fact that I'm American may mean that I'm missing the conflict that the author intended.
I also found the sex to be a little too gratuitous. Did we really need to know that Liona packed a lot of lingerie, and also some sex toys? Did it really advance the story?
The idea of the BIKOs was cool, and the tech explanation of them, as a Star Trek geek, made enough sense that I could appreciate how the BIKOs were built and how they worked.
Overall, I think the story tried to do too much, as activist fiction often does (not saying the author IS an activist, just that his fiction has an activist message). Or, at least, to do too much in too short a period of time. And that, for me, is where it fell down.