The Smallest Object That Can Model the Weather?

There are people who believe in a the matrix, that all reality is a simulation. But i don't believe it, because what is the smallest object that can model the weatheri can't think of it for a moment. And so you begin to realize that it is mathematically impossible to digitize reality. Even a small container of air in a balloon cannot be digitized by the world's greatest super computer. That's how much information is contained in a balloon that the molecules cannot be digitized correctly. So i don't think we are in a digital computer and somebody pushes the play button,. Here we are dancing, thinking that we have free will, when actually somebody hit the play button