Dial a random number -- with your eyes closed.

You close your eyes and put your index finger on the rotary dial, then pull down on the number, then move one up and repeat the motion, twice...

Again you close your eyes -- and again your fingers move on the rotary dial. Ten metallic rings as the dial returns to zero after each number.

You close your eyes and feel your finger move on the rotary dial. You start with 005, as before...