23% of the population makes up 48% of the parents…

From The Atlantic_story America’s Innovation Engine is Slowing_ _ 

“The ten most innovative cities in the United States,” a recent research paper points out, “account for 23 percent of the national population, but for 48 percent of its patents and 33 percent of its gross domestic product.”

No surprise there. If you want to start a family you have to have resources and a reasonable expectation that you’ll continue to have resources.

From the same article.

In the past half century, America’s innovation engine—built on an influx of global brainpower, a vibrant university system, cities that encourage the spontaneous interaction of people and ideas—has worked so well that policy makers have taken it for granted. Yet the pandemic is now disassembling that engine in remarkably precise ways.