My son is two-and-a-half. At this age he is a challenge and a joy. (I expect he always will be, only in different ways). When I'm seated, he delights in hugging my neck from behind, nearly choking me. He insists on pouring his own rice milk, opening the garage himself, and starting each day with a formidable pile of books to be read to him. He plunges underwater fearlessly during swim lessons but refuses to kick or follow instructions.