Physicists propose that shortly after the universe's inception, it was filled with knotted flux tubes—energy strands linking elementary particles. These knots, stable only in three dimensions, may have driven cosmic inflation, naturally leading to a three-dimensional universe.

This theory suggests that the stability of these knotted structures in three-dimensional space provided the energy necessary for the rapid expansion of the early universe, aligning with observations of cosmic inflation and offering a new explanation for the universe's dimensionality.

Mathematical models indicate that knots can only form and remain stable in three-dimensional space, providing a potential explanation for why our universe has three spatial dimensions.