Scientists said they were able to simulate quantum time travel. A series of experiments was carried out by scientists from the University of Cambridge. According to them, every fourth experiment was successful.
Their experiments were based on the belief that when two particles are so close to each other that they are able to interact, even if separated, they will remain connected to each other, reports the journal Physical Review Letters.
To test this, scientists bound two particles together, then used one to change the past state of the other particle. Experiments showed that the probability of successfully changing the past was only 25%.
This indicates that it is impossible to go back in time to change everything, scientists say. The experiment shows that you can only go back to the past and improve the future using the experience of past failures.