In fact, even in today’s scientific age, superstition is still widespread. Many tall buildings, for example, do not have a floor numbered thirteen, because tenants consider this number unlucky and will not rent apartments or offices on this floor. Like ancient man, some people still carry good luck charms such as rabbit’s feet to protect themselves from misfortune. Many people still shudder when a black cat crosses their path; others are absolutely terrified about opening an umbrella inside the house.