Haitian people say this proverb to show the importance of experience. Even though some people are old and their methods are old fashioned, they still work. New comers, new ideas will need time to be experimented to know their result. They also say that even though we want to use new products, new ideas or supplies, we should hold the ancient ones as a backup in case that the new ones are not giving the expected result or present some kind of dysfunctions.