“Imagine you're a race of aliens, right? And you're looking for a new place to live. Say you're looking for a planet like you and I looking for a new place to live. A new house. So here's Earth. Only, it's like this big old house. And it's kind of polluted, dirty, and smoky. Grease on the walls, soot in the chimney. So, they send in their interstellar housecleaners. Send in their broom. Sweep us all up. That's what this it is, it's a broom. Using our own machines to sweep us right off.”