Tomorrowland gets one thing right and practically everything else oppressively wrong. The "big idea" behind the film's premiss is that people are not motivated to change the world by constantly telling them that everything is horrible. People are more motivated by hope for the possibility of a better world. This is true, as any good political organizer will tell you. Unfortunately every conclusion the film draws from that nugget of truth is wildly off base. The film interprets "a better…