I hate superstitions. I think they are the stupidest hogwashical bullshit I have ever heard of. I will attempt to give you a few examples. Number one, the black cat crossing your path. It means bad luck. This tells me that at some point in history, a man was walking and a black cat crossed his path. Shortly after, he was attacked by a mountain lion or a dinosaur. Key: He either lived to tell about it or someone was with him. If he lived to tell about it I say he was lucky as hell. And to have the hindsight to realize that “Hey that was bad luck. It must have been the black cat that crossed my path a couple days ago.” Gotcha.
Number two: If you spill some salt, you have to throw some over your left shoulder. (or is it right?) This tells me that someone had an incident shortly after spilling some salt. And then realized it was the salt spill that had caused his bad luck. Right. So it happens again in his future and he decides to throw some over his shoulder, then discovers that doing so prevented another instance of bad luck. But if nothing bad ever happens, how do you know it would have? And what if you can’t remember the proper shoulder? Does it become even worse luck? What a brilliant guy! This holds no more water than a colander with me.