• Don't insult other visitors. Offensive comments will be deleted without warning.
• Comments are accepted in English only.
• No swearing words in comments, otherwise such comments will be censored.
• Your nickname and avatar are randomly selected. If you don't post comments for 7 days, they both are reset.
• To choose another avatar, click the ‘Random avatar’ link.
The term you were looking for is "Solipsism".
Solipsism is certainly one theory dealing with the the problem of other minds. Though in this kid's case, I would suggest it's more in line with philosophical zombie theory than solipsism.