Back in 2005, one of the biggest stories in tech was a push by a group of MIT professors to build a $100 laptop and give them to children in schools around the world. It was presented as a feel-good story that no one could object to. The story of how these laptops grew into a cultural phenomenon, what their educational impact was, and of what happened to them after they faded from public discussion, is the subject of a new book by Morgan Ames, an adjunct professor at UC Berkeley.