No, there is currently no scientific evidence or understanding that supports the concept of shifting realities or time travel in the way often depicted in science fiction or certain belief systems. While time travel has been a popular subject in literature, movies, and various speculative theories, it remains purely theoretical and not supported by empirical evidence.
Our current understanding of time and reality is based on the laws of physics as we know them. Time is considered a dimension that flows in one direction, from the past to the present and into the future. While it is possible to experience time dilation effects under certain circumstances, such as traveling close to the speed of light or in the presence of strong gravitational fields, these effects do not allow for conscious control or manipulation of time.
It's important to differentiate between scientific principles and concepts from fictional or pseudoscientific ideas. Shifting realities or traveling back in time are more commonly associated with imaginative storytelling and metaphysical beliefs rather than scientifically supported concepts.