There is a question that floats around out there, it goes something like this: “If everything in the universe can be described by physical laws and mathematical equations, how is the universe any different than a computer program or a simulation/computer game?” The answer is that it is not. But there are subtleties and nuances in there and reactions are varied.
One reaction that I have heard from physicists is “why is that an interesting question?” The physicist is trying to understand the laws and equations, and those goals are independent of discovering whose computer our universe is running upon, a more philosophical and perhaps unanswerable question, for you would have to look outside of our universe for that answer. You immediately bump right up into religious notions. For instance, what would be the difference if we were a simulation, simply an advanced program (maybe not so advanced), running on some alien teenager’s bedroom computer and god? From our perspective, there would not be any, for that alien teenager would have all of the capabilities of a god. (Alt-Ctrl-Delete).