Isn't it wild that so many popular ideas about parenting came from one dude? I'm talking, of course, about Dr. Spock. No, no Dr. Spock from Star Trek, but the Dr. Spock who wrote the most influential book about parenting of the 20th century. The Common Sense Book of Baby and Child Care revolutionized child care in the 1940s and 1950s and taught parents to see their children as individuals, all with their own individual needs. Before Spock, parenting books told parents to do everything on a rigi…