Researchers in China have proposed a theory explaining why time moves only forward. Scientists from Hainan University in southern China proposed a new theoretical framework that sheds light on this subject.
Their work does not suggest that time travel to the past is possible. Instead, it offers a fresh explanation for why time appears to have a direction at all, even though the universe’s underlying rules often do not prefer the past over the future.
For as long as humans have been able to think abstractly, time has been one of the deepest mysteries of nature. We remember the past, experience the present, and anticipate the future—but we never experience time running backward. A broken glass does not reassemble itself, people do not grow younger, and yesterday cannot be revisited. Yet many of the fundamental laws of physics do not clearly forbid time from flowing in reverse. This contradiction has puzzled scientists for more than a century.
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