There is a theory that this planet is a simulation. I'm no expert on this theory, but we can examine and explore it from a Non-Duality perspective. The theory goes something like this: the planet is a simulation or virtual reality, which is controlled by possibly hostile beings. Some may say it is like in The Matrix movie, where we are trapped in a virtual world believing it to be real, whilst our real selves are in a form of trance state, where other beings control 'the matrix' and harvest energy from us.
Certainly, what we perceive is not what it appears to be. We could look further and further out to space and find no end. We could look deeper and deeper into the atomic realm and find no end there either. No beginnings or ends can be found in this world. Solid walls aren't really as solid and impervious as they seem. They are made of porous atoms. The firm ground that we walk on is not really firm. It is always moving, shifting slowly and spinning through space.
So it's right to question the nature of reality, because reality is not what it appears to be and it's not what people generally consider it to be. Humanity has a general belief that there are limits to things, that things begin and end, and that things can be defined. But that's not really the case. Walls aren't impervious. The sky doesn't end. A rainbow isn't really divided into seven colours - it's the mind that divides it.
In some ways we could say that yes, this world is a simulation, because there is a magical quality to Nothing appearing as Everything. This world that we perceive is amazing, when we understand that the reality is an unmanifest infinite indivisible Singularity. How does a timeless, dimensionless Singularity explode into a multiplicity through time and space? The answer is that it doesn't. It only seems to. This apparent world of opposites and motion is a simulation of multiplicity within the indivisible Singularity.
So do we accept the simulation theory? Not exactly. There is a flaw. The flaw is that there are no 'other' beings besides the great Beingness of the Singularity in which the world appears. We are not in a simulation. The simulation is in us. The seeming world of opposites appears within the Singularity, which we are. We aren't human, and we aren't some other being on the other side of this world. There are not many beings. Multiplicity is the illusion of the world. The Singularity is the reality. Let's say, for instance, that we broke out of the trance state of the illusion of this world, and we saw (like Neo in The Matrix) that the world was a very different place, who's to say that that isn't also a simulation. One could fall through endless simulations trying to find reality.
But the Reality is right here. There is no 'over there'. There is no other place. There is no place. Only Here Now. Distance, time and movement are the illusion within the unmanifest Singularity right Here Now. You never go anywhere, as there is nowhere outside of you. There is not you and something else, only This. You are This. We are This. This has no limits. You can never be trapped. There can only be a simulation of being trapped - an experience of being limited. That is the human experience - the notion of being limited and separate from others. It's the ego trap. But the ego isn't really the being it thinks it is. It's a complex bundle of thought that forms the notion of being limited and being trapped.
The Singularity (who we really are, and all there really is) seems to experience limitation and separation through this simulation of multiplicity. Humanity can indeed break free from the ego trap and the limitation of the simulation. It is done through revealing that there are no limits and there is no separation, and allowing this recognition to permeate through and dispel the ego delusion.