Ellie Arroway: Occam's razor. You ever heard of it?From: Explore-Science-Fiction-Movies.com (what a long name!)
Palmer Joss: Hack-em's Razor. Sounds like some slasher movie.
Ellie Arroway: No, Occam's Razor is a basic scientific principle and it says: All things being equal, the simplest explanation tends to be the right one.
Here a good article on what is Occam's Razor.