When I took a bath, I realised that we had run out of the soap. So I cried out, from the bathtub, for help to someone at the living room to bring me a new one. I expected that my wife would come to the bath, but it was my son. Although I was skeptical at first about whether he could find and hand me the new soup, I gave him a go. To my surprise, he was able to take a box of soap from the drawer without my instruction, and handed the new soup to me! His growth really makes me happy even when I'm dreadfully fatigued.