That's goes along with a point people often miss. Giving a computer to a child isn't going to automatically impart vast amounts of wisdom. A computer much like a book or a pencil is a tool of learning. The child still has to use it in the right way to learn anything.
It's always irked me a bit when people try to pin low achievement in schools on lack of computers.
I use computer every single day in my professional and personal life. I love them. But I am eternally grateful to my parents that they didn't give me unlimited access to one till High School.
I would have missed out on untold hours of playing outdoors, building things, taking things apart and generally just learning about the world if somebody had shoved a laptop at me when I was 8 or 9.