In physics,there are four kinds of force and four kinds of space-time,bond force and 3-dimensional space-time,strong interaction exchanging pi-mesons and 2-domensional space-time.quark confinement and 1-dimensional space-time andweak interaction and 0-dimensional space-time.Newton and Einstein are different observers.When lenth is zero,rlativity have 2-dimension of width and heigh.So,relativity is 2-dimensional space-time.
from State Space-Time