Most time-travel stories have plots “that violate strict physical laws,” but the time skipping in the upcoming film adaptation of the Time Traveler’s Wife would likely work—if we could travel in time at all, writes physicist Dave Goldberg. That’s because it follows four key rules:
- There’s only one universe. Many films move between parallel universes (think Back to the Future), as theorized in quantum mechanics. But “there’s no evidence parallel universes exist,” and Einstein’s work suggests otherwise. Henry and Clare stick to one timeline.