Rachel Elbaum The other night, my husband and I went out on a long-overdue date. “How were the kids?” we asked our au pair when we walked in. “They were fine, but I thought that you should know that long after Eli was supposed to be in bed asleep, I found him sitting at the computer and watching videos on YouTube,” she told us. “Maybe you should think about putting a password on the computer.” My husband and I looked and each other and sighed. The amount of screen time our ki