As the story goes, when asked if God exists, the Buddha declined to engage such contemplation as a complete waste of time.
So yes, the existence of a God (theism) isn't a viable scientific endeavor.
That said, others speak to some personal strength that their faith gives them. My mother was this way, God rest her soul.
And so I submit to even the most cynical, the placebo effect has been scientifically proven.
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www.health.harvard.edu
So if it helps tolerate interviews, choose to look at their faith as nothing more than a placebo effect.