The claim that "the world is a simulation" is an extremely hard fact to prove that is based entirely on opinions and not necessarily science. This claim is often used as a tool to rationalize why we are all here in the first place. In a world full of mystery and unanswered questions, it is easy to conclude that we are in some kind of computer simulation and that reality is not what it seems. However, it is impossible to model the complex physics of our universe even on the biggest of computers, as explained in an article by PBS. It may be exaggerated to claim that we live in a computer simulation, as there is no concrete evidence to prove so. This claim is much too complex and complicated for anyone to really prove, and there is ultimately no way to conclude if this claim is true or false. In the end, it makes the most sense to say this claim is not checkable, as it is based on opinion and we will never be able to prove definitely if we live in a simulation or not.
Evidence found from pbs.org