“The Diving Bell and the Butterfly” reminded me of a computer program I heard about a few years ago. The main character of the movie (which is based on real story of Elle Magazine owner, Jean-Dominique Bauby) is paralyzed in such a way that he can communicate with the external world only by blinking his left eye. Despite that he managed to write a book using a sophisticated text entry method and enormous patience. If he had Dasher he would be able to do the same thing way easier and faster.