Jacob replaces the character of Bobby (Billy Gray) in the original, and his relationship with Helen was written as a microcosm of how Klaatu comes to see humanity – the alien sees their cold and distant relationship as normal human behavior, and their reconciliation forces him to change his mind.
Jacob zamjenjuje lik Bobbyja u originalu, a njegov odnos s Helen je opisan kao mikrokozmos u kojem Klaatu vidi čovječanstvo - vanzemaljac vidi njihov hladan odnos kao normalno ljudsko ponašanje, a njihovo pomirenje ga natjera da se predomisli.