With the Miracles in mind, you probably have a good idea where I'm coming from. I thought technology would be a decent analogy too but then it would be an analogy only and I might be compromising the accuracy of the situation with it.
A taking that argument further leads me to the supernatural. I would define "supernatural" in a couple of broad ways as it is commonly used. Firstly, its used to describe something unexplained. Unknown rappings in a old house are often caused by "supernatural entities". We don't really know what caused it so its "supernatural" by default. Almost a corollary of the Miracles argument. This kind of supernatural is just plain irrationality and gut instinct. Some cognitive scientists call it the "hyperactive agent detection device" which sees every event as caused by some conscious being. Another example of this is prayer, when you pray for something in your mind ("I hope the bus comes on time"), if you are of a certain mindset, whether the bus comes or does not might reflect the will of your chosen diety. If you've really thought about it, whether it comes or not is a reflection of the bus operator (who might co-incidentally look like your diety) and traffic conditions. Nothing supernatural, just a hyperactive mind.
The second type of supernatural concerns souls. Most of us believe that some part of us will survive death. Not our transplanted organs but somehow despite dying we will still be conscious. Perhaps in an eternal/temporal heaven or hell or we might be somehow transplanted to another body. God too is somehow closely related to this "soul matter" and sometimes is in essence the same. It is supernatural in nature in the sense that it exists outside space and time is above the laws of physics/chemistry/biology and can somehow alter and/or transcend them. This God is sometimes based on the premise of the eternal soul and sometimes it isnt but nonethelss I do not see them as very different ideas. The only issue is that although God/soul is beyond space/time/reason and thus cannot theoretically be proven, the apparent qualities which result from them are disprovable. As a result of souls many people expect the dead to communicate with the living.
To some extent the evidence for this is challenged in the previous paragraph. There are two other aspects of this communication to consider though. One is in the form of visions, these are likely to be figments of the relatives/witnesses mind. The second, which seems to have convinced many people is the apparently accurate statements by mediums which only the dead person would have known. That unfortunately is a magic trick and I would like to refer you to Derren Brown's TV Special "Messiah" to find out more. Just another Miracle.
As a result I am skeptical/unbelieving of supernatural claims. Josh McDowell a Christian apologist calls it "the presupposition of anti-supernaturalism" but staying clear of such claims keeps you grounded in the reality of the provable. Consider Jerry Wayne Borchardt's critique . So once again I want to end of with another quotation, this time by Arthur C. Clarke.
Clarke's Third Law: Any sufficiently advanced technology is indistinguishable from magic.
