A quiet revolution in physics is challenging our most basic assumptions about time. While we experience time as an unbroken flow from past to future, modern physics has struggled for over a century to explain what time actually is. This isn't philosophical nitpicking—it sits at the heart of some of the deepest problems in science.

Einstein's theory of relativity first shattered our intuition about time, showing it runs at different speeds depending on gravity and motion. Two observers moving relative to one another will disagree about which events happened at the same time. Quantum mechanics made things even stranger, treating time as an external parameter rather than something the theory explains. When physicists try to combine these theories into a single framework, time often behaves in unexpected ways—sometimes stretching, sometimes slowing, and sometimes disappearing entirely.

Now a new approach building on information theory suggests time might not be fundamental to reality at all. Instead of treating spacetime as primary, information may be the more fundamental ingredient from which spacetime itself emerges. In this view, spacetime acts as a storage medium for information, composed of discrete elements with finite capacity to record quantum information. This framework could finally resolve the problem of time that has plagued physics for decades and might lead to the long-sought theory of everything.