If you cannot imagine numbers have such power to move a man, imagine instead one of his historical counterparts: you are the tutor who has sensed something strange about this youth Caligula; you are the native who sees a second set of white sails on the horizon following the first; you are the hound who feels the tremors of the tsunami about to crash on Crete and erase the Minoan people, but you know no one will heed you, even if you bark.