Discrete spacetime

Discrete spacetime suggests that space and time are not continuous but made up of tiny, indivisible units, like pixels in a digital image. Instead of being smooth and infinite, they consist of tiny, discrete chunks at the smallest scales, potentially near the Planck length and time. This idea contrasts with traditional physics, which treats spacetime as a smooth fabric. If true, it could help unify quantum mechanics and gravity, offering a deeper understanding of the universe’s fundamental structure.