Dark

Lovers of modern physics would have heard of the existence of dark energy.

In short, dark energy is an obscure form of energy that contributes around two-third of the total energy in the universe.

While watching Matrix again in Chicago, I suddenly suspect we are all living in hallucination within an experimental system created by highly intelligent extraterrestrials or computers - and dark energy is the force that drives the entire system. That's why we cannot explain it by the rule of physics within the system.