It's official: we need to take Thing One to have him formally evaluated for ADD.
We are now at two out of three. (Thing Two definitely has ADHD, along with all the other whammies the poor kid got in the genetic lottery.)
Yes, I know it could be a lot worse. But it still wasn't fun to have to call the neurodevelopmental pediatrician and say, "You know how you already see our one son? Well, now the other one needs to see you too."