To start, In the Rebellious Robot the inventor Dev has a high confidence in his robot that it will not mess up and everything will be perfect. When the robot malfunctioned Dev just fixed and turned it loose without any hesitation of what it would do. Dev just left with the robot being on while being gone for at least an hour.
However, in Frankenstein Victor was scared of what his monster could do. While Victor was away all he could think about was if the monster was still