By the time you have your third child, it’s generally understood that you have a pretty decent handle on what to expect. (Did I hear someone laugh out there?) I know that each child presents his or her own challenges. You’ll always learn new things with each kid, but when my youngest was an infant, I learned something that completely shocked me and the lesson continues to resonate with me. Yesterday, a good friend Organized SAHM, posted a picture on her Facebook page of baby toes. It wasn’t a picture of the cute little adorable toes that we are obligated to kiss and tickle and play with. (The picture just…