I don't get that argument either. My main case for the eraser-nub-mouse is that I don't have to physically move my finger over and over again. It goes like this

I don't get that argument either. My main case for the eraser-nub-mouse is that I don't have to physically move my finger over and over again. It goes like this, put finger in one corner, drag finger, reach end of touch surface, lift finger, put finger again on the opposite side, drag again... until you reach destination.