Computers have made a difference in thousands of people's lives. Partially because of the automation, storage, and processing of information, but partially because it offers an increasing routing around of disabilities, allowing people who used to require an entire fleet of people to function to instead command their computers to do it for them. This seriously reduces the expenses of experiencing a disability.
For example, suppose you lost both your hands in a serious accident. Your life now has serious problems, such as an inability to open doors, dress or wash yourself, and an inability to do huge numbers of jobs out there. But now, you can do some of those things again because you can now control a computer mouse with only your voice.
The program allows you to divide your screen into an arbitrary grid, and then "click" corners of that grid, all by speaking words. Combined with text-to-speech software, a computer can be operated entirely your voice, which would be pretty handy if you for some reason no longer have hands. I can also see this linking up with a domonics system, in which you can command "open door," and it does, "fill the bathtub with 90 degree water," and it happens (this would be the Fahrenheit scale, as 90 degrees Celsius would cause serious burns), "wash my back" and it gets scrubbed down. Within the confines of this type of house, the lack of hands is no longer an obstacle. In the outside world, prosthetics would still be necessary.
This system currently only runs on OSX, but if the applescript component could be ported to Perl, or another openly available language, then this could be ported to other systems as well. Way cool.