No Such Thing As Wizard Jesus: Its aversion and playing straight would both be played out in the event of any first contact with Earth, around the first time someone tried to convert one of the offworlders, ’cause, y’know, water into wine?  Nanobots do it all the time.  Magical super-fast healing?  Built right in.  Walking on water?  This gadget makes surface tension your friend.  Come back from the dead?  Any time you like, soph, body bank’s to your left!

And then the denial sets in.