Learn to Forgive Yourself in a Parallel Universe
Let me be clear: Another Earth, opening July 22, is not a science-fiction film, despite its premise of the discovery of a planet just like our own.
...The speculative fiction in this film, which at this year's Sundance Film Festival won the Alfred P. Sloan Prize for the best film focusing on themes of science and technology and the Special Jury Prize for Dramatic Feature, might seem like something inspired by the multiverse theory. In fact, the movie was screened during the World Science Festival in June, where Columbia University physicist Brian Greene led a discussion about it one evening. But Cahill and Marling—both majored in economics at Georgetown University, and Marling was an analyst at Goldman Sachs—had not even heard of Greene's bestseller on the multiverse theory, The Hidden Reality (Knopf, 2011), until after the movie was done.
Cahill actually came up with the concept after listening to audio books of Pulp Physics by astrophysicist Richard Berendzen, who now directs NASA’s Space Grant Consortium. Berendzen makes an appearance as the expert interviewed on local news to explain the "broken mirror theory" that decouples the inhabitants of both Earths and sets them on different destinies...