In a somewhat whimsical podcast episode, Sean Carroll explores the physics and "rules" of time travel. Probably the first two thirds explore the physics. Carroll notes that if time travel under general relativity is at all possible, it would more likely involve a spaceship attempting to navigate some kind of closed timelike curve than stepping … Continue reading The rules of time travel?
This weekend, I watched X-Men: Days of Future Past, which I enjoyed. This post discusses some aspects of that movie, most notably the ending, so if you haven't seen it yet and don't want to be spoiled, you might consider skipping it until later. In the movie, mankind is in a devastating war with the mutants, … Continue reading X-Men: Days of Future Past, and multiple instances of a mind
http://www.youtube.com/watch?v=vw61gCe2oqI This weekend, I watched the movie, 'Edge of Tomorrow', also known as 'Live. Die. Repeat.' It's the latest in a common motif in science fiction and fantasy, the time loop story, where the hero repeats the same events over and over until they find a way to break out. It's a concept that's been … Continue reading The mind / body dualism of ‘Edge of Tomorrow’