Do you still remember the scene in the famous movie Titanic, directed by Cameron, where Jack was frozen to death in the icy cold water so that Rose could survive on the floating door alone? It broke many people's hearts. Two decades later, people are still asking the question, "wasn't there enough room on the door for both of them?" Cameron once responded by saying it wasn't a question of room, but buoyancy（浮力）— if both of them had tried to stay on the door, he argued, the whole thing would sink.
But several guys from "Mythbusters", an Australian-American science entertainment television program, decided to put the theory to the test themselves. They discovered that if Rose had took off her life jacket to the bottom of the door, there would have been enough buoyancy to keep both of them afloat.
"It was an artistic choice, the thing was just big enough to hold her, and not big enough to hold him," Cameron said. "I think it's all kind of silly, really, that we're having this discussion 20 years later. But it does show that the film was effective in making Jack so attractive to the audience that it hurts them to see him die. The film is about death and separation; he had to die. "
Since Jack was doomed to die, Cameron said, it could have happened in a variety of different ways. It's not about the door not being big enough: that's just a practical method for his death. "Whether it was that, or whether a chimney（烟囱）fell on him, he was going down," Cameron said. "It's called art: things happen for artistic reasons, not for physics reasons. "
