You think that it has to be taken as a trick or evidence of something "supernatural".
Depending on the circumstances there are a couple of other outcomes:
1) insufficient evidence to draw a conclusion
2) unexplanable with current knowledge
In all circumstances of this type that I've ever read about there is never enough information to nail it down one way or the other.
So it can be:
1) false
2) miraculous
3) unexplained at present
4) inconclusive
and I'm sure others that I can't think of yet.
As noted it seems the insufficient firm evidence to arrive anywhere at all is the most common situation.
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