Many people are uncomfortable dealing with numerical data.
However, dealing with numbers can be both interesting and informative. Here is an illustration, from a newspaper article, that helps make numerical data meaningful, interesting, and fun. But 750 years ago it was the 13th century and there were fewer than a billion people in the world. Which means that more recently than a scant 30 generations ago, your mother's and father's genes were merged, with ancestors common to both.