Question for a Rainy Day

Question for a rainy day: If we ever discovered a device that was sensitive to psychic “signals,” it would appear to behave in a random fashion, responding to signals we don’t understand and cannot predict. Thus, any technologist working with such a device would work diligently to “fix” it so that it would behave in a more predictable fashion, i.e. make it immune to any “psychic static.” Having worked in electronics, I know how much work it takes to create a new detector, of any kind, and a significant portion of that work is eliminating unwanted signals. That said, would it be any surprise that none of our measuring and recording devices show any evidence of such signals?