I remember the first time I saw a researcher back in the late '60s using a light pen interacting with a screen to draw. I think we are going to go back to that. I find using a track pad or mouse the ultimate in clumsiness compared to my fingers or a light pen. What we will end up with is using our fingers on a touchscreen or for precision work the equivalent of a light pen. Whether you call them tablets, laptops or netbooks is immaterial, we will have touchscreens with detachable keyboards.