ok, but does the act of observation mean that it has to be a sign?
I like Thomas Paine:
But the resurrection of a dead person from the grave, and his ascension through the air, is a thing very different as to the evidence it admits of, to the invisible conception of a child in the womb. The resurrection and ascension, supposing them to have taken place, admitted of public and ocular demonstration, like that of the ascension of a balloon, or the sun at noon-day, to all Jerusalem at least. A thing which everybody is required to believe, requires that the proof and evidence of it should be equal to all, and universal; and as the public visibility of this last related act was the only evidence that could give sanction to the former part, the whole of it falls to the ground, because that evidence never was given. Instead of this, a small number of persons, not more than eight or nine, are introduced as proxies for the whole world, to say they saw it, and all the rest of the world are called upon to believe it. But it appears that Thomas did not believe the resurrection, and, as they say, would not believe without having ocular and manual demonstration himself. So neither will I, and the reason is equally as good for me, and for every other person, as for Thomas.