As with anything, a bunch of things have to be either happening together, or close enough to make something work. Mongolia needed mobile Internet, MIT needed to put out course ware, someone needed to make the kids aware of it, and tools (phones) and such needed to be available to take advantage of it. Now instead of a 'Yeah right, like that could happen' kind of thing it is becoming 'I know a kid from here that did that' kind of thing and that will inspire a couple more, Etc. Assuming it doesn't get shut down, and/or overloaded, if kids who took advantage of this are successful and bring that success back to their peers then it begins a logarithmic climb out of obscurity.