Some of the smartest people on the planet, including Space X founder Elon Musk and physicist Neil deGrasse Tyson, believe our lives could all just be a computer simulation, run by a highly advanced civilization from another planet.
A philosophy professor from Oxford University named Nick Bostrom even wrote a paper about it, arguing that all it takes is computing power. With enough computing power, you can create a realistic universe, where nobody inside even knows it’s fake. (LadBible)