Gunmans Writings Were Disturbing | World Latest | Guardian Unlimited Lots of people knew Cho. Lots of people thought he was a little weird. Some people called him "the question mark guy" because on the first day of an English lit class, he put a question mark next to his name on an introductory signup sheet for class members. He could not put a name to himself. There were opportunities to reach him that were missed, but who could have known? Cho's aspect was impenetrable; if you called out a greeting to him, he would not reply or respond. Dorm…