Larry 3000 in “Unfinished Business”

Think of time as a section of rope. As Earth moves forward through time, more rope is formed. Recently it was discovered that as time grew older, it began to decay, or “unravel,” as it were, and this disintegration of the past begins to create disastrous results in our future. Let’s say that because of this instability in the past, the dodo bird never becomes extinct, and because of this, a young Henry Ford is attacked by one of these filthy creatures. He is so traumatized by the experience that he never invents the auto assembly line, or the Model T. Without this primitive automobile as a jumping-off point, we in the future are suddenly without our fancy solar-powered hover cars. That’s why we have to constantly repair the past and keep our future strong.