At or very near the Big Bang, the Universe was in a state of minimum Entropy i.e. minimum entanglement i.e. maximum order (in some sense). Post Big bang the co

At or very near the Big Bang, the Universe was in a state of minimum Entropy i.e. minimum entanglement i.e. maximum order (in some sense). Post Big bang the cosmological arrow of time is in the direction of increasing disorder i.e. increasing Entanglement i.e. decreasing order On a smaller closed system, Before is when the system is more pure, less entangled, more ordered After is when it has become less ordered, more entangled. Obvious really...