Why would births and the stock market trend together, if they do at all? Sometimes answers can be found in subtleties. The deepest low in births in the 20th century came in 1933, the year after the century’s deepest low in the stock market. Why would there be a one-year lag? Well, can you think of an activity that always precedes a birth by about a year? If so, could this activity be related social mood?
