Just a couple of the cases in Marshmallow's link:
The James Dean car:
James Dean's car curse
In September 1955, James Dean was killed in a horrific car accident whilst he was driving his Porsche sports car. After the crash the car was seen as very unlucky.
a) When the car was towed away from accident scene and taken to a garage, the engine slipped out and fell onto a mechanic, shattering both of his legs.
b) Eventually the engine was bought by a doctor, who put it into his racing car and was killed shortly afterwards, during a race. Another racing driver, in the same race, was killed in his car, which had James Dean's driveshaft fitted to it.
c) When James Dean's Porsche was later repaired, the garage it was in was destroyed by fire.
d) Later the car was displayed in Sacramento, but it fell off it's mount and broke a teenager's hip.
e) In Oregon, the trailer that the car was mounted on slipped from it's tow bar and smashed through the front of a shop.
f) Finally, in 1959, the car mysteriously broke into 11 pieces while it was sitting on steel supports.
a) A seriously damaged car is not unlikely to fall apart during transport.
b) Racing, especially old Porches, is inherently dangerous. I read somewhere that a disproportionate number of Porche owners were killed in their car.
c) Garage fires are not exactly rare. And here I ask for the first, but not last time: Is this documented? Because if the garage burnt with the car in it, I'm more than a little puzzled about how it can have much history after that.
d) So, it wasn't burned after all?
e) So it was moved about a lot over several years. Not unlikely that it should be involved in some accidents.
f) After all it had been through, it is not too surprising that it should break up one day.
And:
A bullet that reached its destiny years later
Henry Ziegland thought he had dodged fate. In 1883, he broke off a relationship with his girlfriend who, out of distress, committed suicide. The girl's brother was so enraged that he hunted down Ziegland and shot him. The brother, believing he had killed Ziegland, then turned his gun on himself and took his own life. But Ziegland had not been killed. The bullet, in fact, had only grazed his face and then lodged in a tree. Ziegland surely thought himself a lucky man. Some years later, however, Ziegland decided to cut down the large tree, which still had the bullet in it. The task seemed so formidable that he decided to blow it up with a few sticks of dynamite. The explosion propelled the bullet into Ziegland's head, killing him. (Source: Ripley's Believe It or Not!)
This is a typical story which seems compelling, but once you start dissecting it, it begins to look unlikely to have ever happened.
First, of course, the tale is over a century old. So no verification is possible anymore.
The brother of his ex girlfriend wanted to kill him. OK, breaking up was serious back then. But, the killer just fires one shot, then kills himself, without making sure his victim is dead? That sounds rather unlikely. Certainly not normal killer behaviour.
So he was shot at, but only wounded. We must assume he fell over bleeding, otherwise how can we even begin to believe that the killer thought him dead? But he somehow know the bullet lodged in the tree? How did he know that?
OK; now he wants yo take down the tree. Since the bullet supposedly grazed his head, the bullet must be sitting some 6 ft above the ground. He decides to use dynamite. What you do to fell a tree with dynamite is to drill a few holes and stick dynamite in them. Obviously, he would do that close to the ground (no reason to leave a tall stub), but how should the bullet, sitting about six feet up in the tree and now covered in bark be propelled anywhere by that?
I think the following happened: The guy was shot at. Maybe perpetrator shot himself, but anyhow our guy survived. Later he put down a tree near the scene, with dynamite, and was killed by flying debris (a very real risk in such an operation, if you are a bit careless). The rest is conjecture.
Or, maybe the whole story is fiction.
I think that if you go through all such stories, most will be much less fantastic.
And for the rest? Well, lottery tickets come out against incredible odds all the time.
Hans