The link between the brain and the mind is still rather tenuous, as far as I understand it, and although we can see where activity in the brain is related to certain patterns of thought, the point where we can look at a brain scan and read someone's thoughts is still so far away as to be in dreamland. Which I find wonderful. The only way to understand a human, so far, is to *be* a human. Looking at one with fancy instruments, so far anyway, just doesn't come close.

"Sight to the blind" is another thing, though, as of course there are multiple reasons for blindness, some of which are related to parts of the eye rather than parts of the brain.

But I love the fact that when you get to the question of "What can't science explain" just at present, you end up with an answer of "um, us." :)

I tend to be of the opinion that the burden of proof lies on the person making the assertion. I therefore am more inclined to consider ghosts to be a product of the (extremely powerful) hallucinatory circuits in the brain, rather than any external source.

I do have some relatives who tend towards the psychic, though, although I've never dared apply scientific reasoning to their observations. There's something very human about belief in ghosts, psychics and mediums (media?) and I'm not entirely sure that debunking them completely would be a positive step.