I’ve written a few times about the kid difficulty function and how having more kids is like scaling up a business. We make fewer mistakes as parents, hopefully, in theory, as the number of kids increases.
Another result of scaling up is that the oldest becomes the experimental child, potentially with more psychological issues than the youngest, but also more resilience. By number four I’ve finally perfected the baby swing. This contraption has progressed from a chest harness hung from a door knob, with our first kid, to a three-dimensional spring-loaded recliner, with our fourth.
More kids demands more parenting ingenuity.