One day, when he was very young (aged 6-7) he sat in a room and ate candy after the New Year. When the last one was left (as I remember now) Batya entered the room. When he saw the candy, he said "Do you want to show me the focus with the candy?". I naturally agreed and gave it to him in anticipation of seeing magic, and Batya calmly ate it before my eyes and said that by the evening the candy would turn into a "bubble". I don’t believe in magic since then.