Thinking about Online Information it seems to me that the Apps World aspect has changed things. The apps may not have been part of the main show but most people in Olympia were aware of the apps aspect. The average age of the people there was probably lower than most of Online but not just student types. So the background of BETT must assume that mobile devices are available, at least outside of school hours.
So the direction of the walk can change, not just because of the sequence of the shows, The technology is now reaching consumer electronics and challenging the education.