Ah! A chance to tell my own very favorite ghost story.
I was in my teen years when my grandmother (my Dad's mother) died. We went to the funeral, and then later the graveside service. The cemetary was a small one, bounded by barbed wire fences behind a small church in a very rural area. On one side was the church and its gravel parking lot. Opposite that and to the left (if one was at the church facing the cemetary) were pastures, with a few scattered trees and some trees along the fenceline. To the right was a wooded area.
After the service, several of the family members were standing and talking, in the lot behind the church. It was getting late into the afternoon, moving into dusk. I noticed several people off to one side looking into the pasture on the left. Curious, I walked over to see what they were looking at.
The field there rose slightly to a small hill about fifty yards away, topped by a large tree: an oak of some sort. And right there, clear as day, was the image of a woman, completely white, walking underneath the tree. She appeared to have long hair, and be wearing a robe or gown of some sort, hair, skin and clothing hall white as snow. As we all watched, she would walk a few yards, then disappear. She would reappear, walk back, and disappear again. Here it was, proof of ghosts!
Exciting, eh? Undisputably a ghost. Being young and brave (read: too stupid to think of any possible consequences), I decided to get a closer look, and crossed the fenceline to walk a bit towards the hill.
This was when I discovered my ghost was...not.
It was a cow.
A black and white cow...mostly black, expect the front legs were white, connected by a stripe that crossed over its shoulders. In the low light, and under the tree, that white stripe was all that could be seen. When the cow was facing sideways (compared to us onlookers), the white stripe appeared to be a person. When the cow moved the person appeared to walk. When the cow would turn facing us (or away from us) the white was hidden, making the "woman" appear to disappear.
That was one of the defining moments that led me to skepticism. If I hadn't walked closer and looked, this would have been one of those stories that I (and all those with me) were
positive could not be explained a way...it was clearly a ghost or image of a person walking, appearing, and disappearing. I doubt that anyone, with any amount of research, would ever have discovered what we were actually seeing. If anyone had suggested I saw a cow instead of a ghost, I would have laughed at them. That incident really drove home the fact that just because we can't explain something, it does NOT mean there isn't a rational, natural explanation. Even if we wouldn't guess that explanation in a million years