Bret Victor's always spot on. I see it differently though. Touchscreens are interfaces to something so fundamentally abstract (data presentation/manipulation)

Bret Victor's always spot on. I see it differently though. Touchscreens are interfaces to something so fundamentally abstract (data presentation/manipulation) that it's hard for it to be less ethereal than images that change on a display. Touchscreens just factored away the mouse/keyboard. The next information-driven interfaces will, most likely, be something that you don't even interact with your hands (retina image? voice recognition? brain-computer interfaces?) than some sort of screen with tactile feedback. Physical interaction will be limited to tools which map to tasks in the physical realm.