In 1775, a year before the Declaration of Independence was signed, a Harvard professor named Edward Wigglesworth did the math on American population growth and could barely contain his excitement. He had found that the colonists were doubling their numbers every 25 years, mostly through births, and at that pace he projected that by the close of the 20th century there would be “ONE THOUSAND TWO-HUNDRED AND EIGHTY MILLIONS” of us (his capitalization, not mine). A billion Americans, and then some.
Sadly, there are only about 340 million of us today. We should be asking not just why we so badly undershot Wigglesworth’s hopes, but also whether we are about to start counting down instead of up.