From our earliest memories of childhood, we can remember family or friends telling us not to step on the cracks in the sidewalks because it will “break your mother’s back.”
Remember running from black cats because your friend told you if it crossed your path you would have bad luck?
Most of these superstitions become so ingrained in modern societies that we don’t realize their origins. For instance, the idea that walking under a ladder will bring you bad luck came from Egypt 5,000 years ago.
How about the warning that spilling salt is unlucky? That came from the ancient Sumerians. As old as some of these ideas, it’s always amazing how many have survived and have been adapted into the beliefs and habits of modern people.