I’m marveling over our budding bilingual boy. It’s true that he is not bilingual yet, but I am fascinated by the changes going on in our household. This happens all the time, I know, but it is a different feeling to experience it first hand. I guess I feel like the parent of a newborn who exclaims, “She pursed her lips and cooed! It was so amazing!” I have known several bilingual children over the years--friends who grew up in Mexico and whose children have always been speaking Spanish and English, friends who moved from the Netherlands to the U.S. when their oldest was two are among those was around more. I remember when he didn’t know any English, but then gradually he knew more and more, but I didn’t get to watch it so close up. In these two examples the parents were already fluent in English, so it only seemed natural that their kids would become fluent in English. They told me they didn’t speak English at home, but I don’t think I really believed them. As late as 2 week...