THE steel door is 1 x 2 meters high, 20 centimeters wide and as thick as a door to a vault. Two large handles are visible. One holds a combination lock. Two keys must be inserted before the two handles will turn. If the combination is correct then another 15-centimeter-long key still needs to be inserted and turned. Only then will the safe door open. Even, one is prevented from immediately entering the fortified room by a metal grill across the e