Our entire universe can be represented as a collection of bits of information. The real question is whether that information can be compressed or not. If it can

Our entire universe can be represented as a collection of bits of information. The real question is whether that information can be compressed or not. If it can be, that means you could store our universe digitally, if it can't, that means it has to exist in analog. If you can store it digitally, then it almost certainly is somewhere. I remember reading about how NES and other cartridge game systems are harder to emulate than disc-based systems like the PSX. The reason is that cartridges are more than just flat data storage, they have chips and other electronics on them that screw with the emulation. I'm inclined to believe (and I believe it's actually been proven) that quantum information is incompressible, that would make any algorithm that would simulate it to have the same time and space requirements as the physical system.