Great points. BUT - touch screens can be used if people are trained, the layout is rational, the device is responsive. There are two underlying things: 1) Ta

Great points. BUT - touch screens can be used if people are trained, the layout is rational, the device is responsive. There are two underlying things: 1) Tactile. As you spelled out. 2) Changing interfaces. This is the real killer. 100 screens, don't know what's what, supposed to be driving. These UIs need some thinking but I suggest that the 'knobs and buttons' can possibly be mapped to different functions depending on.