In ancient Greece they had great theatrical events, plays in large amphitheaters. They didn’t have microphones to make their voices heard, and they didn’t have cameras to magnify their images onto screens, so they invented their own system. They developed big masks. The masks made them look like the characters they portrayed. Built into the masks were megaphones to amplify their voices. The actors got on stage, got behind their masks and they became somebody else, someone different than they really were. The actors were called "hypocrites." That’s where the word came from. There are a lot of people whose life is a big act.