 Cameron designed the characters of Rose and Jack to serve as what he has termed "an emotional lightning rod for the audience", making the tragedy of the disaster more immediate.As Peter Kramer puts it, the love story is intended to humanise the disaster, while the disaster lends the love story a mythic aspect.Cameron's film cost $200 million, making it the most expensive film ever made up to that time; much of it was shot on a vast, nearly full-scale replica of "Titanic"s starboard side built in Baja California, Mexico.