I find this interesting.
“These are examples of supernatural events that might convince me”…but how would you know that these aren’t simply natural events that haven’t an explanation?
Well, I didn’t say anything quite so question-begging as what have have in quotation marks there, but I’ll try to explain.
In the case of my brother and his “magic rocks,” if the energy that is supposedly radiating from the crystals really is something that he and others can detect and has some sort of physical effect on them, it would have to be some kind of energy that we already know about and be able to detect; any sort of ‘new’ energy that it might be would not be able to have such an effect (Sean Carroll talks about this sort of thing
here). So, if there is actually something going on, if my brother was able to reliably demonstrate that he was in fact sensing something, either our view of physics is very, very wrong (which isn’t likely; more Sean Carroll goodness
here) or there is something supernatural going on. I’d view the supernatural explanation as being more likely.
Heck, there’s even examples of limbs growing spontaneously in nature, so were an amputee to be cured “miraculously”, wouldn’t that just be another example of a natural event?
youtube.com/watch?v=TsC-pkaVbA8
We do have some examples of regeneration in humans, but nothing as substantial as an amputated limb. If there was a case where it was confirmed to have happened, we could study to see what sort of regeneration was occurring and, if we have identified the genes responsible for that sort of regeneration in other animals, we could check the patient’s DNA for something similar. If it was there, then it’s probably natural.
But let’s say that the DNA wasn’t there, and we can’t find any genetic component to correspond with what was going on. That would start to tip the scales towards something supernatural, but there would be plenty of room for doubt. But what if it wasn’t just this one patient, but a slew of them, all connected to a particular faith healer traveling around the country? Then I’d say we had a bona fide miracle and naturalism is false. This would also be the case if instead of a slow, steady regeneration like we see in animals, we saw something like instantaneous regrowth.