Weird Time-Travel-Looking Device


 * Doc: "1.21 jigowatts!!!"
 * Marty: "What the hell is a jigowatt?"

Time traveling is just too dangerous. It is better to seek other mysteries of the universe, like women. Even if you could produce 1.21 jigowatts of power to make it work, why would you break rule number 1?

Rule nº1: Do not mess with the past.