Superstitions

After thinking about Friday the 13th, while putting laundry away my mind started thinking back about my dad and his ways. I giggled because my dad was so very superstitious. Now in all fairness, both of my folks were born before 1909, so superstitions were very plentiful back then.
We'd be in our car at a railroad crossing, and he would prevent me from counting the box cars, telling me that it was bad luck to do so. Don't dare step on a crack or you'd break your mother's back. Come to think of it both my folks threw a pinch of salt over their shoulder several times that I can remember. Thinking about hotels without a 13th floor, airports without a 13th aisle, or 13th seat, does that mean that the 14th really is the 13th?