When I was in Primary Two or Three, I went through a period of frustration with this concept of "self". My question was fairly simple: "Why couldn't I leave my own body and see the world through other people's eyes?" What I wanted to verify was whether the world as I saw it was identical to what other people would have seen, if I were them. If the answer was yes, then it would prove "my world" was not just a flick of my own imagination or a product of my mind's eye. However, if the answer was negative, then the "I" as I knew it then, would be in big trouble!! So for a while, I did not go play outside, my mind wondered in the quagmire, and I became quite unhappy over this irresolvable question, to the extent that my Mum thought I was falling ill. I was born an introvert and of course would not share any of my thoughts with anyone. However, being an active person, I just could not stand staying home for any extended period of time. Alas, when my neighborhood kids again came asking me whether I wanted to go bicycling, playing hide-and-seek, and other Chinese games with them, I decided to drop this cul du sec issue and ran outside with them into the sunshine.