For the final test, the actors perform all of the physically strenuous actions Jack and Rose went through prior to finding the floating door — including the scene where another passenger tries to use Rose as a floatation device, only to be met with a heavy blow from Jack's fist. They also add an extra moment that didn't happen in the film, as the Rose in the experiment gives Jack a life jacket for added protection.
"He's stabilized," Cameron observes. "He got into a place where if we projected that out, he just might've made it until the lifeboat got there. Jack might've lived, but there's a lot of variables. I think his thought process was, 'I'm not going to do one thing that jeopardized her,' and that's 100 percent in character."
ew.com
