A "scientifically-supportable theory"* is one that describes a phenomenon that can be observed sufficiently to form a hypothesis and then test that hypothesis b

A "scientifically-supportable theory"* is one that describes a phenomenon that can be observed sufficiently to form a hypothesis and then test that hypothesis by experiment. In what way would you propose to test the simulation hypothesis by experiment? (* I'm assuming you're using the word "theory" loosely here.)