I don't think it's a gimmick. Whether it's necessary or not depends on your personal needs. My mother, Gus, I feel fine. My baby was very introverted when he was a child, afraid to contact others and talked very late. When he was two and a half years old, he only called his parents. I reported it to his mother, Gus, and thought I could learn something by taking part in more social activities. After a few classes, you can clearly see the change. The children are very happy. They also like to try to talk, laugh more and be more lively when they go home. They are cheerful.