An Ivy League economist was pulled off an American Airlines regional jet from Philadelphia to Syracuse after a fellow passenger incorrectly identified the mathematical equations he was scrawling for foreign script, and suspected him of terrorism. An unidentified woman sitting next to him tried to strike up a conversation with Guido Menzio as they waited for American American Airline Flight 3950 to take off. However, Menzio wasn’t interested in chatting with the woman.