When I was going to school in Hawaii, someone gave me a figure carved from lava taken from the big island. Almost immediately I began having horrendous luck. I got mugged and was very badly beaten up, almost drowned when I had a massive systems breakdown during a scuba dive, breakdown of every car I went in to Honolulu. I decided to go by bus and every bus I took broke down. Just one thing after another. I figured it was just Hawaii. Couldn't wait to get back to the mainland. But once I got back the problems persisted. Finally, I decided to get rid of everything people had given me while I was there. And one item I became suspicious of was that lava figure. I didn't know that you're supposed to send the bloody thing back, so I just threw it away!
Anyway, it worked. Suddenly everything was coming up roses. Later, I told this story to a friend of mine who had been a Navy Captain in charge of all three Navy hospitals in Hawaii (including Tripler). He was a frequent diver and didn't have a surreptitious bone in his body. He told me about the curse put on lava on the big island by the local goddess, Madam Palé. He also told me there was a visitor's center there that kept thousands of notes on file by people who returned their lava relics, claiming horrible luck. Apparently, as long as you're on the island, it's okay to keep. But even if you go to another island, you're in trouble. So I asked my friend if he believed this, and he shook his head no. "Well," I said, "if someone gave you one of these little relics, would you keep it?" Again he shook his head. "Just because I don't believe in it doesn't mean that something else isn't going on, so," he said, "weighing the advantages of having it against the chance I'm wrong, I just wouldn't do it."
"So even though you don't believe it, you don't want to take the risk based on the testimonies of all those people who had returned theirs?" I said. Yes. Now if the lava was a million dollars, he said, he might take the risk. But seeing that it was lava, the risk wasn't worth it.
It made perfect sense when he put it that way.