Ai Weiwei, the Chinese artist and dissident who believes it his job to be “incorrect,” was hard at work Tuesday night during an appearance at The Town Hall in Manhattan. “I really like to make trouble,” Ai said during a 50-minute conversation-sparring match with author-interviewer Mira Jacob, during which he was as likely to question the question as he was to answer it. The event was presented by PEN America, part of the literary and free expression organization's PEN Out Loud series.