Everyone, by their singularity, perceives time differently.
Time is relative, from a physical point of view, but also from a perceptual point of view. Five hours waiting in the emergency room seems to go much slower than five hours an evening in good company. Why? Because the brain shapes our perception of time.
On the other hand, gravity and black holes have also changed our understanding of space and time. Some contemplate, for example, that a black hole could be a tunnel to a parallel dimension, where the laws of physics as we know them, do not exist.
