WTF is Quantum Retrocausality? (ft. Physics Girl)
What if the future influences the past? It could, according to this new quantum theory. Special thanks to Dianna from Physics Girl for her help with this episode!
==========
We all know, if Marty travels back into the past, and messes with it, he makes the Biff timeline. Casual. We all get it. Moral of the story: If you time travel and mess with anything in the past, you automatically mess with your future, but if Marty was a quantum particle? Maybe not so much. From what we commonly understand, time has One Direction and that direction is forward; past, present, future. But physicists are playing with the theory of “retrocausality”, which if real, is the idea that the future can influence the past. That’s like if I spill coffee on my shirt TOMORROW, but I will see the coffee stain on my shirt today. It’s kooky and is an idea that has been around for a long time, but it never caught on, because why would it?? We live on a cause-and-effect timel...
==========
We all know, if Marty travels back into the past, and messes with it, he makes the Biff timeline. Casual. We all get it. Moral of the story: If you time travel and mess with anything in the past, you automatically mess with your future, but if Marty was a quantum particle? Maybe not so much. From what we commonly understand, time has One Direction and that direction is forward; past, present, future. But physicists are playing with the theory of “retrocausality”, which if real, is the idea that the future can influence the past. That’s like if I spill coffee on my shirt TOMORROW, but I will see the coffee stain on my shirt today. It’s kooky and is an idea that has been around for a long time, but it never caught on, because why would it?? We live on a cause-and-effect timel...
