I could only image being blind and having to navigate a world that is completely flat. Knobs and controls add something to grab onto. to me it's also safer, if

I could only image being blind and having to navigate a world that is completely flat. Knobs and controls add something to grab onto. to me it's also safer, if I'm driving and want to change the radio channel, i can feel for the knob without having to take my eyes off the road. i can't do this with a flat, touchscreen display and I also find that voice command work most times but, on the time they don't, i get frustrated and that's not good when driving either as it can cause road rage. innovation is wonderful, however sometimes the old ways win out.