Roll with your eyes closed to understand muscle movement by touch. Notice when the opponent starts to move, certain groups of tendons/muscles begin to tense up. You notice an attempt or pass is about to occur. All (wing Chung/sticky hands) type ish, but translates well to jiu jitsu.
Besides, you never know when you'll be caught defending yourself in a dark alley, with limited to no visibility.
Besides, you never know when you'll be caught defending yourself in a dark alley, with limited to no visibility.