Recently the top minds in science and engineering have been occupied with simulation theory. The basic premise is that the world we are living is just a simulation. We are living inside a computer game. The closest thing that comes to mind is the movie Matrix. While there have been many fans of this film, nobody serious entertained the thought that it is anything but fiction. The scary thing is that accomplished figures in science and business have lively debates about simulation theory. At first, it sounds like a joke. But if you ponder it for a while, you will likely change your mind.
The argument of the billionaire entrepreneur Musk is that if we assume the development of computer games industry at any rate withing few decades we will be able to create an illusion so real that it is indistinguishable from reality. The virtual reality goggles from Oculus Rift already make people go crazy. The impression that they are riding a roller coaster is so vivid that they lose balance and start to scream uncontrollably. The players are unable to separate the simulated vision from reality. In the universe, there are billions of solar systems that could be the home for an intelligent civilization. One of these civilizations must have bitten us in the race and put us in the simulation. That would explain why aliens haven’t contacted us yet.
The other side of the argument is brought up by physicists and cosmologists. The equations describing laws of physics indicate that matter and energy are discrete. Electrons run only at discrete orbits around the nucleus. If they must change an orbit, they will move quantumly in a single jump. From a computational point of view, it is much easier to simulate the world which exists only at discrete points in space. If some advanced civilization intended to program a universe, it would be logical for it to make this world discrete.