This Quantum Theory Reveals That The Future Might Be Influencing The Past
One of the weirder aspects of quantum mechanics could be explained by an equally weird idea – that causation can run backwards in time as well as forwards. What Einstein called "spooky" action at a distance could theoretically be evidence of retrocausality , which is the particle equivalent of you getting a stomach ache today thanks to tomorrow's bad lunch. A pair of physicists from the US and Canada took a closer look at some basic assumptions in quantum theory and decided unless we discovered time necessarily ran one way, measurements made to a particle could echo back in time as well as forward. We all know quantum mechanics is weird. And part of that weirdness comes down to the fact that at a fundamental level, particles don't act like solid billiard balls rolling down a table, but rather like a blurry cloud of possibilities shifting around the room. This blurry cloud comes into sharp focus when we try to measure particles, meaning we can only ever see a white ...