Acting is trying to be absolutely truthful; to get audiences to believe that you are a dean, when, actually, not only are you not the dean, but if you walked into the building they'd probably throw you out. That's very hard.
Scientific evidence for God's existence is being claimed today by theists, many of whom carry respectable scientific or philosophical credentials. He who is neither a she nor an it supposedly answers prayers and otherwise dramatically affects the outcome of events. If these consequences are as significant as believers say, then the effects should be detectable in properly controlled experiments.