In a Washington Post op-ed, Michael S. Rosenwald wonders why after all the reporting, analysis, and punditry following the Newtown tragedy we still know so little about the perpetrator, Adam Lanza. Very few people in his town knew or recognized him, other than from news reports. Rosenwald says this is because Lanza lived almost entirely on the Web. “The only person who recalled dealing with him was the town hairstylist, who had trimmed Lanza’s hair,” writes Rosenwald. “Think about that: Except for using the bathroom and eating his meals, getting a haircut was just about the only thing Lanza couldn’t do online. All the things he apparently enjoyed were accessible to him without leaving his room.” [Source: Washington Post]