A Good Friend said:
But outside of a ghost discussion, there's always going to be a stink of the human vantage point connected to what is and what isn't. This is important because ruling out what can't be perceived may cause us to throw away something that can, but hasn't been.
Similarly to what you said, this is true in the quantum realm. Observation forces a certain configuration. However, several experiments have been done to get around this. I don't know them off the top of my head, but I know they exist.
It's important not to
rule out anything yes. But if all the evidence points to one direction, then that's the direction scientists choose. For instance, evolution (macro) has not been proven, yet all evidence points to the direction that it exists. Therefore, scientists accept it.
All the evidence points that there is nothing supernatural, but, if something supernatural does occur, it's important to investigate it to the best of our ability to discern its cause. If our understanding of scientific laws has to change, then so be it.
In a sense, you're right. But, pragmatically, it's safe to say that the "supernatural" is not possible.