I remember perspiring heavily the first time I spoke to him. I had seen him before, tugging at tree branches at two in the morning, lumbering uneasily outside Princeton’s Firestone Library. His eyes had an emptiness that terrified me. He seemed to move as though in a zombified stupor, his arms reaching forward to coil themselves around the nearest prop or pole. His feet seemed to fall behind. I had seen Paul, the Wikipedia Man, inside Firestone before.